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Replace "users" with friendlier terms (#1125) 

Co-Authored-By: lexi <git@lx-is.lol>
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Jonah Aragon 2022-04-27 16:57:30 -05:00
parent b9797310ab
commit 8bfa10b6e4
Signed by: jonah
SSH Key Fingerprint: SHA256:oJSBSFgpWl4g+IwjL96Ya8ocGfI7r6VKnQw+257pZZ0
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docs/about/privacy-policy.en.md
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@ -49,7 +49,7 @@ jonah@privacyguides.org
For all other inquiries, you can contact any member of our team.
For complaints under GDPR more generally, European Union users may lodge complaints with their local data protection supervisory authorities.
For complaints under GDPR more generally, you may lodge complaints with your local data protection supervisory authorities.
## About This Policy

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@ -29,7 +29,7 @@ We recommend installing one of these custom Android operating systems on your de
[Homepage](https://grapheneos.org/){ .md-button .md-button--primary } [Privacy Policy](https://grapheneos.org/faq#privacy-policy){ .md-button }
GrapheneOS supports [Sandboxed Google Play](https://grapheneos.org/usage#sandboxed-google-play), which runs [Google Play Services](https://en.wikipedia.org/wiki/Google_Play_Services) fully sandboxed like a regular user app. This means you can take advantage of most Google Play Services, such as [push notifications](https://firebase.google.com/docs/cloud-messaging/), while having full user control over their permissions and access, and while containing them to a specific work profile or user [profile](android/overview.md#user-profiles) of your choice.
GrapheneOS supports [Sandboxed Google Play](https://grapheneos.org/usage#sandboxed-google-play), which runs [Google Play Services](https://en.wikipedia.org/wiki/Google_Play_Services) fully sandboxed like any other regular app. This means you can take advantage of most Google Play Services, such as [push notifications](https://firebase.google.com/docs/cloud-messaging/), while giving you full control over their permissions and access, and while containing them to a specific work profile or user [profile](android/overview.md#user-profiles) of your choice.
Google Pixel phones are the only devices that currently meet GrapheneOS's [hardware security requirements](https://grapheneos.org/faq#device-support).
@ -43,7 +43,7 @@ Google Pixel phones are the only devices that currently meet GrapheneOS's [hardw
[Homepage](https://calyxos.org/){ .md-button .md-button--primary } [Privacy Policy](https://calyxinstitute.org/legal/privacy-policy){ .md-button }
To accomodate users who need Google Play Services, CalyxOS optionally includes [microG](https://microg.org/). CalyxOS also includes alternate location services, [Mozilla](https://location.services.mozilla.com/) and [DejaVu](https://github.com/n76/DejaVu).
For people who need Google Play Services, CalyxOS optionally includes [microG](https://microg.org/). CalyxOS also includes alternate location services, [Mozilla](https://location.services.mozilla.com/) and [DejaVu](https://github.com/n76/DejaVu).
CalyxOS only [supports](https://calyxos.org/docs/guide/device-support/) Google Pixel phones. However, support for the OnePlus 8T/9 and Fairphone 4 is [currently in beta](https://calyxos.org/news/2022/04/01/fairphone4-oneplus8t-oneplus9-test-builds/).
@ -212,7 +212,7 @@ Auditor performs attestation and intrusion detection by:
- The *auditor* can either be another instance of the Auditor app or the [Remote Attestation Service](https://attestation.app).
- The *auditor* records the current state and configuration of the *auditee*.
- Should tampering with the operating system of the *auditee* after the pairing is complete, the auditor will be aware of the change in the device state and configurations.
- The user will be alerted to the change.
- You will be alerted to the change.
No personally identifiable information is submitted to the attestation service. We recommend that you sign up with an anonymous account and enable remote attestation for continuous monitoring.

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docs/android/grapheneos-vs-calyxos.en.md
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@ -12,7 +12,7 @@ GrapheneOS extends the user profile feature, allowing you to end a current sessi
When Google Play services are used on GrapheneOS, they run as a user app and are contained within a user or work profile.
Sandboxed Google Play is confined using the highly restrictive, default [`untrusted_app`](https://source.android.com/security/selinux/concepts) domain provided by [SELinux](https://en.wikipedia.org/wiki/Security-Enhanced_Linux). Permissions for apps to use Google Play Services can be revoked at any time by the user.
Sandboxed Google Play is confined using the highly restrictive, default [`untrusted_app`](https://source.android.com/security/selinux/concepts) domain provided by [SELinux](https://en.wikipedia.org/wiki/Security-Enhanced_Linux). Permissions for apps to use Google Play Services can be revoked at any time.
microG is an open-source re-implementation of Google Play Services. This means it needs to be updated every time Android has a major version update (or the Android API changes). It also needs to run in the highly privileged [`system_app`](https://source.android.com/security/selinux/concepts) SELinux domain like regular Google Play Services, and it requires an operating system that allows [signature spoofing](https://github.com/microg/GmsCore/wiki/Signature-Spoofing), which allows system apps to insecurely masquerade as other apps. This is less secure than Sandboxed Google Play's approach, which does not need access to sensitive system APIs.
@ -30,7 +30,7 @@ In terms of application compatibility, Sandboxed Google Play outperforms microG
Android 12 comes with special support for seamless app updates with [third party app stores](https://android-developers.googleblog.com/2020/09/listening-to-developer-feedback-to.html). The popular Free and Open Source Software (FOSS) repository [F-Droid](https://f-droid.org) doesn't implement this feature and requires a [privileged extension](https://f-droid.org/en/packages/org.fdroid.fdroid.privileged) to be included with the Android distribution in order to have unattended app installation.
GrapheneOS doesn't compromise on security; therefore, they do not include the F-Droid extension. Users have to confirm all updates manually if they want to use F-Droid. Alternatively, they can use the Droid-ify client which does support seamless app updates in Android 12. GrapheneOS officially recommends [Sandboxed Google Play](https://grapheneos.org/usage#sandboxed-google-play) instead. Many FOSS Android apps are also in Google Play but sometimes they are not (like [NewPipe](../video-streaming.md)).
GrapheneOS does not include F-Droid, because all updates have to be manually installed, which poses a security risk. However, you can use the [Droid-ify](../android.md#droid-ify) client for F-Droid which does support seamless (background) app updates in Android 12. GrapheneOS officially recommends [Sandboxed Google Play](https://grapheneos.org/usage#sandboxed-google-play) instead. Many FOSS Android apps are also in Google Play but sometimes they are not (like [NewPipe](../video-streaming.md)).
CalyxOS includes the [privileged extension](https://f-droid.org/en/packages/org.fdroid.fdroid.privileged), which may lower device security. Seamless app updates should be possible with [Aurora Store](https://auroraoss.com) in Android 12.
@ -38,7 +38,7 @@ CalyxOS includes the [privileged extension](https://f-droid.org/en/packages/org.
GrapheneOS improves upon [AOSP](https://source.android.com/) security with:
- **Hardened WebView:** Vanadium WebView requires [64-bit](https://en.wikipedia.org/wiki/64-bit_computing) processes on the [WebView](https://developer.android.com/reference/android/webkit/WebView) process and disables legacy [32-bit](https://en.wikipedia.org/wiki/32-bit_computing) processes. It uses hardened compiler options such as [`-fwrapv`](https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html) and [`-fstack-protector-strong`](https://gcc.gnu.org/onlinedocs/gcc-4.9.3/gcc/Optimize-Options.html), which can help protect against [stack buffer overflows](https://en.wikipedia.org/wiki/Stack_buffer_overflow). [API](https://en.wikipedia.org/wiki/API)s such as the [battery status API](https://chromestatus.com/feature/4537134732017664) are disabled for privacy reasons. All system apps on GrapheneOS use the Vanadium WebView which means user installed apps that use WebView will also benefit from Vanadium's hardening. The [Vanadium patch set](https://github.com/GrapheneOS/Vanadium/tree/12/patches) is a lot more comprehensive than CalyxOS's [Chromium patch set](https://gitlab.com/CalyxOS/chromium-patches) which is derived from it.
- **Hardened WebView:** Vanadium WebView requires [64-bit](https://en.wikipedia.org/wiki/64-bit_computing) processes on the [WebView](https://developer.android.com/reference/android/webkit/WebView) process and disables legacy [32-bit](https://en.wikipedia.org/wiki/32-bit_computing) processes. It uses hardened compiler options such as [`-fwrapv`](https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html) and [`-fstack-protector-strong`](https://gcc.gnu.org/onlinedocs/gcc-4.9.3/gcc/Optimize-Options.html), which can help protect against [stack buffer overflows](https://en.wikipedia.org/wiki/Stack_buffer_overflow). [API](https://en.wikipedia.org/wiki/API)s such as the [battery status API](https://chromestatus.com/feature/4537134732017664) are disabled for privacy reasons. All system apps on GrapheneOS use the Vanadium WebView which means that apps which use WebView will also benefit from Vanadium's hardening. The [Vanadium patch set](https://github.com/GrapheneOS/Vanadium/tree/12/patches) is a lot more comprehensive than CalyxOS's [Chromium patch set](https://gitlab.com/CalyxOS/chromium-patches) which is derived from it.
- **Hardened Kernel:** GrapheneOS kernel includes some hardening from the [linux-hardened](https://github.com/GrapheneOS/linux-hardened) project and the [Kernel Self Protection Project (KSPP)](https://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project). CalyxOS uses the [same kernel](https://calyxos.org/docs/development/build/kernel/) as regular Android with some minor modifications.
- **Hardened Memory Allocator:** GrapheneOS uses the [hardened malloc](https://github.com/GrapheneOS/hardened_malloc) subproject as its memory allocator. This focuses on hardening against [memory heap corruption](https://en.wikipedia.org/wiki/Memory_corruption). CalyxOS uses the default AOSP [Scudo Malloc](https://source.android.com/devices/tech/debug/scudo), which is generally [less effective](https://twitter.com/danielmicay/status/1033671709197398016). Hardened Malloc has uncovered vulnerabilities in AOSP which have been [fixed](https://github.com/GrapheneOS/platform_system_core/commit/be11b59725aa6118b0e1f0712572e835c3d50746) by GrapheneOS such as [CVE-2021-0703](https://nvd.nist.gov/vuln/detail/CVE-2021-0703).
- **Secure Exec Spawning:** GrapheneOS [spawns](https://en.wikipedia.org/wiki/Spawn_(computing)) fresh processes as opposed to using the [Zygote model](https://ayusch.com/android-internals-the-android-os-boot-process) used by AOSP and CalyxOS. The Zygote model weakens [Address Space Layout Randomization](https://en.wikipedia.org/wiki/Address_space_layout_randomization) (ASLR) and is considered [less secure](https://wenke.gtisc.gatech.edu/papers/morula.pdf). Creating [fresh processes](https://grapheneos.org/usage#exec-spawning) is safer but will have some performance penalty when launching a new application. These penalties are not really noticeable unless you have an [old device](https://support.google.com/nexus/answer/4457705) with slow storage such as the Pixel 3a/3a XL as it has [eMMC](https://en.wikipedia.org/wiki/MultiMediaCard#eMMC).

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@ -28,7 +28,7 @@ We do not believe that the security sacrifices made by rooting a phone are worth
[Verified Boot](https://source.android.com/security/verifiedboot) is an important part of the Android security model. It provides protection against [evil maid](https://en.wikipedia.org/wiki/Evil_maid_attack) attacks, malware persistence, and ensures security updates cannot be downgraded with [rollback protection](https://source.android.com/security/verifiedboot/verified-boot#rollback-protection).
Android 10 and above has moved away from full-disk encryption to more flexible [file-based encryption](https://source.android.com/security/encryption/file-based). Each user's data is encrypted using their own unique encryption key, and the operating system files are left unencrypted.
Android 10 and above has moved away from full-disk encryption to more flexible [file-based encryption](https://source.android.com/security/encryption/file-based). Your data is encrypted using unique encryption keys, and the operating system files are left unencrypted.
Verified Boot ensures the integrity of the operating system files, thereby preventing an adversary with physical access from tampering or installing malware on the device. In the unlikely case that malware is able to exploit other parts of the system and gain higher privileged access, Verified Boot will prevent and revert changes to the system partition upon rebooting device.
@ -44,17 +44,19 @@ EOL devices which are no longer supported by the SoC manufacturer cannot receive
## Android Versions
It's important to not use an [end-of-life](https://endoflife.date/android) version of Android. Newer versions of Android not only receive security updates for the operating system but also important privacy enhancing updates too. For example, [prior to Android 10](https://developer.android.com/about/versions/10/privacy/changes), any user apps with the [`READ_PHONE_STATE`](https://developer.android.com/reference/android/Manifest.permission#READ_PHONE_STATE) permission could access sensitive and unique serial numbers of your phone such as [IMEI](https://en.wikipedia.org/wiki/International_Mobile_Equipment_Identity), [MEID](https://en.wikipedia.org/wiki/Mobile_equipment_identifier), your SIM card's [IMSI](https://en.wikipedia.org/wiki/International_mobile_subscriber_identity), whereas now they must be system apps to do so. System apps are only provided by the OEM or Android distribution.
It's important to not use an [end-of-life](https://endoflife.date/android) version of Android. Newer versions of Android not only receive security updates for the operating system but also important privacy enhancing updates too. For example, [prior to Android 10](https://developer.android.com/about/versions/10/privacy/changes), any apps with the [`READ_PHONE_STATE`](https://developer.android.com/reference/android/Manifest.permission#READ_PHONE_STATE) permission could access sensitive and unique serial numbers of your phone such as [IMEI](https://en.wikipedia.org/wiki/International_Mobile_Equipment_Identity), [MEID](https://en.wikipedia.org/wiki/Mobile_equipment_identifier), your SIM card's [IMSI](https://en.wikipedia.org/wiki/International_mobile_subscriber_identity), whereas now they must be system apps to do so. System apps are only provided by the OEM or Android distribution.
## Android Permissions
[Permissions on Android](https://developer.android.com/guide/topics/permissions/overview) grant users control over what apps are allowed to access. Google regularly makes [improvements](https://developer.android.com/about/versions/11/privacy/permissions) on the permission system in each successive version. All user installed apps are strictly [sandboxed](https://source.android.com/security/app-sandbox), therefore there is no need to install any antivirus apps. The savings you make from not purchasing or subscribing to security apps is better spent on paying for a supported device in the future.
[Permissions on Android](https://developer.android.com/guide/topics/permissions/overview) grant you control over what apps are allowed to access. Google regularly makes [improvements](https://developer.android.com/about/versions/11/privacy/permissions) on the permission system in each successive version. All apps you install are strictly [sandboxed](https://source.android.com/security/app-sandbox), therefore there is no need to install any antivirus apps. The savings you make from not purchasing or subscribing to security apps is better spent on paying for a supported device in the future.
Should you want to run an app that you're unsure about, consider using a user or work [profile](android/#android-security-privacy).
## User Profiles
Multiple user profiles can be found in **Settings** → **System** → **Multiple users** and are the simplest way to isolate in Android. With user profiles you can limit a user from making calls, SMS or installing apps on the device. Each profile is encrypted using its own encryption key and cannot access the data of any other profiles. Even the device owner cannot view the data of other profiles without knowing their password. Multiple user profiles is a more secure method of isolation.
Multiple user profiles can be found in **Settings** → **System** → **Multiple users** and are the simplest way to isolate in Android.
With user profiles, you can impose restrictions on a specific profile, such as: making calls, using SMS, or installing apps on the device. Each profile is encrypted using its own encryption key and cannot access the data of any other profiles. Even the device owner cannot view the data of other profiles without knowing their password. Multiple user profiles is a more secure method of isolation.
## Work Profile
@ -62,7 +64,7 @@ Multiple user profiles can be found in **Settings** → **System** → **Multipl
A **device controller** such as [Shelter](#recommended-apps) is required, unless you're using CalyxOS which includes one.
The work profile is dependent on a device controller to function. Features such as *File Shuttle* and *contact search blocking* or any kind of isolation features must be implemented by the controller. The user must also fully trust the device controller app, as it has full access to the data inside of the work profile.
The work profile is dependent on a device controller to function. Features such as *File Shuttle* and *contact search blocking* or any kind of isolation features must be implemented by the controller. You must also fully trust the device controller app, as it has full access to your data inside of the work profile.
This method is generally less secure than a secondary user profile; however, it does allow you the convenience of running apps in both the work and personal profiles simultaneously.
@ -90,11 +92,11 @@ The Advanced Protection Program provides enhanced threat monitoring and enables:
- Stricter [safe browser scanning](https://www.google.com/chrome/privacy/whitepaper.html#malware) with Google Chrome
- Stricter recovery process for accounts with lost credentials
For users that are using the privileged Google Play Services (common on stock operating systems), the Advanced Protection Program also comes with [additional benefits](https://support.google.com/accounts/answer/9764949?hl=en) such as:
If you use non-sandboxed Google Play Services (common on stock operating systems), the Advanced Protection Program also comes with [additional benefits](https://support.google.com/accounts/answer/9764949?hl=en) such as:
- Not allowing app installation outside of the Google Play Store, the OS vendor's app store, or via [`adb`](https://en.wikipedia.org/wiki/Android_Debug_Bridge)
- Mandatory automatic device scanning with [Play Protect](https://support.google.com/googleplay/answer/2812853?hl=en#zippy=%2Chow-malware-protection-works%2Chow-privacy-alerts-work)
- Warning the user about unverified applications
- Warning you about unverified applications
### Google Play System Updates

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@ -27,7 +27,7 @@ These are our current web browser recommendations and settings. We recommend kee
- [:fontawesome-brands-git: Source](https://trac.torproject.org/projects/tor)
!!! warning
You should **never** install any additional extensions on Tor Browser, including the ones we suggest for Firefox. Browser extensions make you stand out from other Tor users and your browser easier to [fingerprint](https://support.torproject.org/glossary/browser-fingerprinting).
You should **never** install any additional extensions on Tor Browser, including the ones we suggest for Firefox. Browser extensions make you stand out from other people on the Tor network, and make your browser easier to [fingerprint](https://support.torproject.org/glossary/browser-fingerprinting).
## Desktop Browser Recommendations

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@ -36,7 +36,7 @@ These products are included with an subscription with their respective [email pr
![Proton Calendar logo](assets/img/calendar-contacts/proton-calendar.svg){ align=right }
**Proton Calendar** is an calendar app that is available to ProtonMail users. All data stored within it is end-to-end encrypted when stored on ProtonMail's servers.
**Proton Calendar** is an calendar app that is available to ProtonMail members. All data stored within it is end-to-end encrypted when stored on ProtonMail's servers.
[Website](https://calendar.protonmail.com){ .md-button .md-button--primary } [Privacy Policy](https://protonmail.com/privacy-policy){ .md-button }

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@ -22,9 +22,9 @@ icon: material/dns
[^1]: AdGuard stores aggregated performance metrics of their DNS servers, namely the number of complete requests to a particular server, the number of blocked requests, and the speed of processing requests. They also keep and store the database of domains requested in within last 24 hours. "We need this information to identify and block new trackers and threats." "We also log how many times this or that tracker has been blocked. We need this information to remove outdated rules from our filters." [https://adguard.com/en/privacy/dns.html](https://adguard.com/en/privacy/dns.html)
[^2]: Cloudflare collects and stores only the limited DNS query data that is sent to the 1.1.1.1 resolver. The 1.1.1.1 resolver service does not log personal data, and the bulk of the limited non-personally identifiable query data is stored only for 25 hours. [https://developers.cloudflare.com/1.1.1.1/privacy/public-dns-resolver/](https://developers.cloudflare.com/1.1.1.1/privacy/public-dns-resolver/)
[^3]: Neither free nor premium users of ControlD have logging enabled by default. Premium users can enable logging/analytics at will. [https://controld.com/privacy](https://controld.com/privacy)
[^3]: Neither ControlD's free nor premium plans have logging enabled by default. Premium subscribers can enable logging/analytics at will. [https://controld.com/privacy](https://controld.com/privacy)
[^4]: Mullvad's DNS service is available to both subscribers and non-subscribers of Mullvad VPN. Their privacy policy explicitly claims they do not log DNS requests in any way. [https://mullvad.net/en/help/no-logging-data-policy/](https://mullvad.net/en/help/no-logging-data-policy/)
[^5]: NextDNS can provide insights and logging features on an opt-in basis. Users can choose retention times and log storage locations for any logs they choose to keep. If not specifically requested by the user, no data is logged. [https://nextdns.io/privacy](https://nextdns.io/privacy)
[^5]: NextDNS can provide insights and logging features on an opt-in basis. You can choose retention times and log storage locations for any logs you choose to keep. If it's not specifically requested, no data is logged. [https://nextdns.io/privacy](https://nextdns.io/privacy)
[^6]: Quad9 collects some data for the purposes of threat monitoring and response. That data may then be remixed and shared, such as for the purpose of security research. Quad9 does not collect or record IP addresses or other data they deem personally identifiable. [https://www.quad9.net/privacy/policy/](https://www.quad9.net/privacy/policy/)
The criteria for the servers listed above are:
@ -64,7 +64,7 @@ Select **Settings** &rarr; **General** &rarr; **Privacy** &rarr; **Share Apple T
### Windows
Windows users can [turn on DoH](https://docs.microsoft.com/en-us/windows-server/networking/dns/doh-client-support) by accessing Windows settings in the control panel.
You can [turn on DoH](https://docs.microsoft.com/en-us/windows-server/networking/dns/doh-client-support) by accessing Windows settings in the control panel.
Select **Settings** &rarr; **Network & Internet** &rarr; **Ethernet or WiFi**, &rarr; **Edit DNS Settings** &rarr; **Preferred DNS encryption** &rarr; **Encrypted only (DNS over HTTPS)**.
@ -99,7 +99,7 @@ Encrypted DNS proxy software provides a local proxy for the [unencrypted DNS](te
![DNSCloak logo](assets/img/ios/dnscloak.png){ align=right }
**DNSCloak** is an open-source iOS client supporting [DNS-over-HTTPS](technology/dns.md#dns-over-https-doh), [DNSCrypt](technology/dns.md#dnscrypt), and [dnscrypt-proxy](https://github.com/DNSCrypt/dnscrypt-proxy/wiki) options such as caching DNS responses, locally logging DNS queries, and custom block lists. Users can [add custom resolvers by DNS stamp](https://medium.com/privacyguides/adding-custom-dns-over-https-resolvers-to-dnscloak-20ff5845f4b5).
**DNSCloak** is an open-source iOS client supporting [DNS-over-HTTPS](technology/dns.md#dns-over-https-doh), [DNSCrypt](technology/dns.md#dnscrypt), and [dnscrypt-proxy](https://github.com/DNSCrypt/dnscrypt-proxy/wiki) options such as caching DNS responses, locally logging DNS queries, and custom block lists. You can [add custom resolvers by DNS stamp](https://medium.com/privacyguides/adding-custom-dns-over-https-resolvers-to-dnscloak-20ff5845f4b5).
[Project Info](https://github.com/s-s/dnscloak/blob/master/README.md){ .md-button .md-button--primary } [Privacy Policy](https://drive.google.com/file/d/1050No_pU74CAWUS5-BwQWyO2x_aiMzWc/view){ .md-button }

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@ -35,7 +35,7 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
??? check "Custom Domains and Aliases"
Paid ProtonMail users can use their own domain with the service. [Catch-all](https://protonmail.com/support/knowledge-base/catch-all/) addresses are supported with custom domains for Professional and Visionary plans. ProtonMail also supports [subaddressing](https://protonmail.com/support/knowledge-base/creating-aliases/), which is useful for users who don't want to purchase a domain.
Paid ProtonMail subscribers can use their own domain with the service. [Catch-all](https://protonmail.com/support/knowledge-base/catch-all/) addresses are supported with custom domains for Professional and Visionary plans. ProtonMail also supports [subaddressing](https://protonmail.com/support/knowledge-base/creating-aliases/), which is useful for people who don't want to purchase a domain.
??? check "Private Payment Methods"
@ -51,9 +51,9 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
??? check "Email Encryption"
ProtonMail has [integrated OpenPGP encryption](https://protonmail.com/support/knowledge-base/how-to-use-pgp) in their webmail. Emails to other ProtonMail users are encrypted automatically, and encryption to non-ProtonMail users with an OpenPGP key can be enabled easily in your account settings. They also allow you to [encrypt messages to non-ProtonMail users](https://protonmail.com/support/knowledge-base/encrypt-for-outside-users) without the need for them to sign up for a ProtonMail account or use software like OpenPGP.
ProtonMail has [integrated OpenPGP encryption](https://protonmail.com/support/knowledge-base/how-to-use-pgp) in their webmail. Emails to other ProtonMail accounts are encrypted automatically, and encryption to non-ProtonMail addresses with an OpenPGP key can be enabled easily in your account settings. They also allow you to [encrypt messages to non-ProtonMail addresses](https://protonmail.com/support/knowledge-base/encrypt-for-outside-users) without the need for them to sign up for a ProtonMail account or use software like OpenPGP.
ProtonMail also supports the discovery of public keys via HTTP from their [Web Key Directory (WKD)](https://wiki.gnupg.org/WKD). This allows users outside of ProtonMail to find the OpenPGP keys of ProtonMail users easily, for cross-provider E2EE.
ProtonMail also supports the discovery of public keys via HTTP from their [Web Key Directory (WKD)](https://wiki.gnupg.org/WKD). This allows people who don't use ProtonMail to find the OpenPGP keys of ProtonMail accounts easily, for cross-provider E2EE.
??? check ".onion Service"
@ -77,7 +77,7 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
??? check "Custom Domains and Aliases"
Mailbox.org lets users use their own domain and they support [catch-all](https://kb.mailbox.org/display/MBOKBEN/Using+catch-all+alias+with+own+domain) addresses. Mailbox.org also supports [subaddressing](https://kb.mailbox.org/display/BMBOKBEN/What+is+an+alias+and+how+do+I+use+it), which is useful for users who don't want to purchase a domain.
Mailbox.org lets you use your own domain, and they support [catch-all](https://kb.mailbox.org/display/MBOKBEN/Using+catch-all+alias+with+own+domain) addresses. Mailbox.org also supports [subaddressing](https://kb.mailbox.org/display/BMBOKBEN/What+is+an+alias+and+how+do+I+use+it), which is useful if you don't want to purchase a domain.
??? info "Private Payment Methods"
@ -95,13 +95,13 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
??? check "Email Encryption"
Mailbox.org has [integrated encryption](https://kb.mailbox.org/display/MBOKBEN/Send+encrypted+e-mails+with+Guard) in their webmail, which simplifies sending messages to users with public OpenPGP keys. They also allow [remote recipients to decrypt an email](https://kb.mailbox.org/display/MBOKBEN/My+recipient+does+not+use+PGP) on Mailbox.org's servers. This feature is useful when the remote recipient does not have OpenPGP and cannot decrypt a copy of the email in their own mailbox.
Mailbox.org has [integrated encryption](https://kb.mailbox.org/display/MBOKBEN/Send+encrypted+e-mails+with+Guard) in their webmail, which simplifies sending messages to people with public OpenPGP keys. They also allow [remote recipients to decrypt an email](https://kb.mailbox.org/display/MBOKBEN/My+recipient+does+not+use+PGP) on Mailbox.org's servers. This feature is useful when the remote recipient does not have OpenPGP and cannot decrypt a copy of the email in their own mailbox.
Mailbox.org also supports the discovery of public keys via HTTP from their [Web Key Directory (WKD)](https://wiki.gnupg.org/WKD). This allows users outside of Mailbox.org to find the OpenPGP keys of Mailbox.org users easily, for cross-provider E2EE.
Mailbox.org also supports the discovery of public keys via HTTP from their [Web Key Directory (WKD)](https://wiki.gnupg.org/WKD). This allows people outside of Mailbox.org to find the OpenPGP keys of Mailbox.org accounts easily, for cross-provider E2EE.
??? info ".onion Service"
You can access your Mailbox.org account via IMAP/SMTP using their [.onion service](https://kb.mailbox.org/display/MBOKBEN/The+Tor+exit+node+of+mailbox.org). However, their webmail interface cannot be accessed via their .onion service, and users may experience TLS certificate errors.
You can access your Mailbox.org account via IMAP/SMTP using their [.onion service](https://kb.mailbox.org/display/MBOKBEN/The+Tor+exit+node+of+mailbox.org). However, their webmail interface cannot be accessed via their .onion service, and you may experience TLS certificate errors.
??? info "Additional Functionality"
@ -114,7 +114,7 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
![Disroot logo](assets/img/email/disroot.svg#only-light){ align=right }
![Disroot logo](assets/img/email/disroot-dark.svg#only-dark){ align=right }
**Disroot** offers email amongst [other services](https://disroot.org/en/#services). The service is maintained by volunteers and its community. They have been in operation since 2015. Disroot is based in Amsterdam. Disroot is free and uses open source software such as Rainloop to provide service. Users support the service through donations and buying extra storage. The mailbox limit is 1 GB, but extra storage can be purchased 0.15€ per GB per month paid yearly.
**Disroot** offers email amongst [other services](https://disroot.org/en/#services). The service is maintained by volunteers and its community. They have been in operation since 2015. Disroot is based in Amsterdam. Disroot is free and uses open source software such as Rainloop to provide service. You can support the service through donations and buying extra storage. The mailbox limit is 1 GB, but extra storage can be purchased 0.15€ per GB per month paid yearly.
**Free**
@ -122,7 +122,7 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
??? check "Custom Domains and Aliases"
Disroot lets users use their own domain. They have aliases, however you must [manually apply](https://disroot.org/en/forms/alias-request-form) for them.
Disroot lets you use your own domain. They have aliases, however you must [manually apply](https://disroot.org/en/forms/alias-request-form) for them.
??? check "Private Payment Methods"
@ -140,7 +140,7 @@ Find a secure email provider that will keep your privacy in mind. Don’t settle
??? check "Email Encryption"
Disroot allows for encrypted emails to be sent from their webmail application using OpenPGP. However, Disroot has not integrated a Web Key Directory (WKD) for users on their platform.
Disroot allows for encrypted emails to be sent from their webmail application using OpenPGP. However, Disroot has not integrated a Web Key Directory (WKD) for email accounts on their platform.
??? missing ".onion Service"
@ -179,7 +179,7 @@ Tutanota is working on a [desktop client](https://tutanota.com/blog/posts/deskto
??? check "Account Security"
Tutanota supports [two factor authentication](https://tutanota.com/faq#2fa). Users can either use TOTP or U2F. U2F support is [not yet available on Android](https://github.com/tutao/tutanota/issues/443).
Tutanota supports [two factor authentication](https://tutanota.com/faq#2fa) with either TOTP or U2F. U2F support is [not yet available on Android](https://github.com/tutao/tutanota/issues/443).
??? check "Data Security"
@ -187,9 +187,9 @@ Tutanota is working on a [desktop client](https://tutanota.com/blog/posts/deskto
??? warning "Email Encryption"
Tutanota [does not use OpenPGP](https://www.tutanota.com/faq/#pgp). Tutanota users can only receive encrypted emails when external users send them through a [temporary Tutanota mailbox](https://www.tutanota.com/howto/#encrypted-email-external).
Tutanota [does not use OpenPGP](https://www.tutanota.com/faq/#pgp). Tutanota accounts can only receive encrypted emails from non-Tutanota email accounts when sent via a [temporary Tutanota mailbox](https://www.tutanota.com/howto/#encrypted-email-external).
Tutanota [does have plans](https://github.com/tutao/tutanota/issues/198) to support [AutoCrypt](https://autocrypt.org). This would allow for external users to send encrypted emails to Tutanota users as long as their email client supports the AutoCrypt headers.
Tutanota [does have plans](https://github.com/tutao/tutanota/issues/198) to support [AutoCrypt](https://autocrypt.org). This would allow for non-Tutanota emails to send encrypted emails to Tutanota accounts as long as their email client supports the AutoCrypt headers.
??? missing ".onion Service"
@ -228,13 +228,13 @@ Tutanota is working on a [desktop client](https://tutanota.com/blog/posts/deskto
??? info "Data Security"
StartMail has [zero access encryption at rest](https://www.startmail.com/en/whitepaper/#_Toc458527835), using their "user vault" system. When a user logs in, the vault is opened, and the email is then moved to the vault out of the queue where it is decrypted by the corresponding private key.
StartMail has [zero access encryption at rest](https://www.startmail.com/en/whitepaper/#_Toc458527835), using their "user vault" system. When you log in, the vault is opened, and the email is then moved to the vault out of the queue where it is decrypted by the corresponding private key.
StartMail supports importing [contacts](https://support.startmail.com/hc/en-us/articles/360006495557-Import-contacts) however, they are only accessible in the webmail and not through protocols such as [CalDAV](https://en.wikipedia.org/wiki/CalDAV). Contacts are also not stored using zero knowledge encryption, so a [standalone option](calendar-contacts.md) may be more appropriate.
??? check "Email Encryption"
StartMail has [integrated encryption](https://support.startmail.com/hc/en-us/sections/360001889078-Encryption) in their webmail, which simplifies sending messages to users with public OpenPGP keys.
StartMail has [integrated encryption](https://support.startmail.com/hc/en-us/sections/360001889078-Encryption) in their webmail, which simplifies sending encrypted messages with public OpenPGP keys.
??? missing ".onion Service"
@ -242,7 +242,7 @@ Tutanota is working on a [desktop client](https://tutanota.com/blog/posts/deskto
??? info "Additional Functionality"
StartMail allows for proxying of images within emails. If a user allows the remote image to be loaded, the sender won't know what the user's IP address is.
StartMail allows for proxying of images within emails. If you allow the remote image to be loaded, the sender won't know what your IP address is.
## Email Cloaking Services
@ -251,7 +251,7 @@ Tutanota is working on a [desktop client](https://tutanota.com/blog/posts/deskto
![AnonAddy logo](assets/img/email/anonaddy.svg#only-light){ align=right }
![AnonAddy logo](assets/img/email/anonaddy-dark.svg#only-dark){ align=right }
**[AnonAddy](https://anonaddy.com)** lets users create aliases that forward to their email address. Can be self-hosted. [Source code on GitHub](https://github.com/anonaddy/anonaddy).
**[AnonAddy](https://anonaddy.com)** lets you create aliases that forward to their email address. Can be self-hosted. [Source code on GitHub](https://github.com/anonaddy/anonaddy).
!!! recommendation
@ -261,7 +261,7 @@ Tutanota is working on a [desktop client](https://tutanota.com/blog/posts/deskto
## Self-Hosting Email
Advanced users may consider setting up their own email server. Mailservers require attention and continuous maintenance in order to keep things secure and mail delivery reliable.
Advanced system administrators may consider setting up their own email server. Mailservers require attention and continuous maintenance in order to keep things secure and mail delivery reliable.
### Combined software solutions
@ -269,7 +269,7 @@ Advanced users may consider setting up their own email server. Mailservers requi
![Mail-in-a-Box logo](assets/img/email/mail-in-a-box.svg){ align=right }
**[Mail-in-a-Box](https://mailinabox.email)** is an automated setup script for deploying a mail server on Ubuntu. Its goal is to make it easier for users to set up their own mail server.
**[Mail-in-a-Box](https://mailinabox.email)** is an automated setup script for deploying a mail server on Ubuntu. Its goal is to make it easier for people to set up their own mail server.
!!! recommendation
@ -301,23 +301,23 @@ Operating outside the five/nine/fourteen-eyes countries is not necessarily a gua
### Technology
We regard these features as important in order to provide a safe and optimal service to users. Users should consider the provider which has the features they require.
We regard these features as important in order to provide a safe and optimal service. You should consider whether the provider which has the features you require.
**Minimum to Qualify:**
- Encrypts account data at rest.
- Integrated webmail encryption provides convenience to users who want improve on having no E2EE.
- Integrated webmail encryption provides convenience to those who want an improvement on having no E2EE.
**Best Case:**
- Encrypts account data at rest with zero-access encryption.
- Allow users to use their own [domain name](https://en.wikipedia.org/wiki/Domain_name). Custom domain names are important to users because it allows them to maintain their agency from the service, should it turn bad, be acquired by another company which doesn't prioritize privacy etc.
- Allow you to use your own [domain name](https://en.wikipedia.org/wiki/Domain_name). Custom domain names are important, because they allow you to maintain your agency from the service, should it turn bad or be acquired by another company which doesn't prioritize privacy, etc.
- Support for [WKD](https://wiki.gnupg.org/WKD) to allow improved discovery of public OpenPGP keys via HTTP.
GnuPG users can get a key by typing: `gpg --locate-key example_user@example.com`
- Support for a temporary mailbox for external users. This is useful when you want to send an encrypted email, without sending an actual copy to your recipient. These emails usually have a limited lifespan and then are automatically deleted. They also don't require the recipient to configure any cryptography like OpenPGP.
You can get a key by typing: `gpg --locate-key example_user@example.com`
- Support for a temporary mailbox for outside accounts. This is useful when you want to send an encrypted email, without sending an actual copy to your recipient. These emails usually have a limited lifespan and then are automatically deleted. They also don't require the recipient to configure any cryptography like OpenPGP.
- Availability of the email provider's services via an [onion service](https://en.wikipedia.org/wiki/.onion).
- [Subaddressing](https://en.wikipedia.org/wiki/Email_address#Subaddressing) support.
- Catch-all or alias functionality for users who own their own domains.
- Catch-all or alias functionality for those who own their own domains.
- Use of standard email access protocols such as IMAP, SMTP or [JMAP](https://en.wikipedia.org/wiki/JSON_Meta_Application_Protocol). Standard access protocols ensure customers can easily download all of their email, should they want to switch to another provider.
### Privacy
@ -336,7 +336,7 @@ We prefer our recommended providers to collect as little data as possible.
### Security
Email servers deal with a lot of very sensitive data. We expect that providers will adopt best industry practices in order to protect their users.
Email servers deal with a lot of very sensitive data. We expect that providers will adopt best industry practices in order to protect their members.
**Minimum to Qualify:**
@ -357,10 +357,10 @@ Email servers deal with a lot of very sensitive data. We expect that providers w
**Best Case:**
- Support for hardware authentication, ie U2F and [WebAuthn](https://en.wikipedia.org/wiki/WebAuthn). U2F and WebAuthn are more secure as they use a private key stored on a client-side hardware device to authenticate users, as opposed to a shared secret that is stored on the web server and on the client side when using TOTP. Furthermore, U2F and WebAuthn are more resistant to phishing as their authentication response is based on the authenticated [domain name](https://en.wikipedia.org/wiki/Domain_name).
- Support for hardware authentication, ie U2F and [WebAuthn](https://en.wikipedia.org/wiki/WebAuthn). U2F and WebAuthn are more secure as they use a private key stored on a client-side hardware device to authenticate people, as opposed to a shared secret that is stored on the web server and on the client side when using TOTP. Furthermore, U2F and WebAuthn are more resistant to phishing as their authentication response is based on the authenticated [domain name](https://en.wikipedia.org/wiki/Domain_name).
- Zero access encryption, builds on encryption at rest. The difference being the provider does not have the decryption keys to the data they hold. This prevents a rogue employee leaking data they have access to or remote adversary from releasing data they have stolen by gaining unauthorized access to the server.
- [DNS Certification Authority Authorization (CAA) Resource Record](https://tools.ietf.org/html/rfc6844) in addition to DANE support.
- Implementation of [Authenticated Received Chain (ARC)](https://en.wikipedia.org/wiki/Authenticated_Received_Chain), this is useful for users who post to mailing lists [RFC8617](https://tools.ietf.org/html/rfc8617).
- Implementation of [Authenticated Received Chain (ARC)](https://en.wikipedia.org/wiki/Authenticated_Received_Chain), this is useful for people who post to mailing lists [RFC8617](https://tools.ietf.org/html/rfc8617).
- Bug-bounty programs and/or a coordinated vulnerability-disclosure process.
- Website security standards such as:
@ -386,12 +386,12 @@ With the email providers we recommend we like to see responsible marketing.
**Minimum to Qualify:**
- Must self host analytics (no Google Analytics etc). The provider's site must also comply with [DNT (Do Not Track)](https://en.wikipedia.org/wiki/Do_Not_Track) for those users who want to opt-out.
- Must self host analytics (no Google Analytics etc). The provider's site must also comply with [DNT (Do Not Track)](https://en.wikipedia.org/wiki/Do_Not_Track) for those who wish to opt-out.
Must not have any marketing which is irresponsible:
- Claims of "unbreakable encryption". Encryption should be used with the intention that it may not be secret in the future when the technology exists to crack it.
- Making guarantees of protecting anonymity 100%. When someone makes a claim that something is 100% it means there is no certainty for failure. We know users can quite easily deanonymize themselves in a number of ways, e.g.:
- Making guarantees of protecting anonymity 100%. When someone makes a claim that something is 100% it means there is no certainty for failure. We know people can quite easily deanonymize themselves in a number of ways, e.g.:
- Reusing personal information e.g. (email accounts, unique pseudonyms etc) that they accessed without anonymity software (Tor, VPN etc)
- [Browser fingerprinting](https://en.wikipedia.org/wiki/Device_fingerprint#Browser_fingerprint)
@ -438,7 +438,7 @@ Email software will often show some visible headers that you may have seen such
### When is email metadata used?
Client software may use it to show who a message is from and what time it was received. Servers may use it to determine where an email message must be sent, among [other purposes](https://en.wikipedia.org/wiki/Email#Message_header) not transparent to the user.
Client software may use it to show who a message is from and what time it was received. Servers may use it to determine where an email message must be sent, among [other purposes](https://en.wikipedia.org/wiki/Email#Message_header) which are not always transparent.
### Where is the email metadata?

8
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@ -28,7 +28,7 @@ The options listed here are multi-platform and great for creating encrypted back
VeraCrypt is a fork of the discontinued TrueCrypt project. According to its developers, security improvements have been implemented and issues raised by the initial TrueCrypt code audit have been addressed.
When encrypting with VeraCrypt, the user has the option to select from different [hash functions](https://en.wikipedia.org/wiki/VeraCrypt#Encryption_scheme). We suggest users **only** select [SHA-512](https://en.wikipedia.org/wiki/SHA-512) and should stick to the [AES](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) block cipher.
When encrypting with VeraCrypt, you have the option to select from different [hash functions](https://en.wikipedia.org/wiki/VeraCrypt#Encryption_scheme). We suggest you **only** select [SHA-512](https://en.wikipedia.org/wiki/SHA-512) and stick to the [AES](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) block cipher.
Truecrypt has been [audited a number of times](https://en.wikipedia.org/wiki/TrueCrypt#Security_audits) and VeraCrypt has also been [audited seperately](https://en.wikipedia.org/wiki/VeraCrypt#VeraCrypt_audit).
@ -194,7 +194,7 @@ Tools with command-line interfaces are useful for intergrating [shell scripts](h
![Kryptor logo](assets/img/encryption-software/kryptor.png){ align=right }
**Kryptor** is a free and open source file encryption and signing tool that makes use of modern and secure cryptographic algorithms. It aims to be a better version of [age](https://github.com/FiloSottile/age) and [Minisign](https://jedisct1.github.io/minisign/) to provide a simple, user friendly alternative to GPG.
**Kryptor** is a free and open source file encryption and signing tool that makes use of modern and secure cryptographic algorithms. It aims to be a better version of [age](https://github.com/FiloSottile/age) and [Minisign](https://jedisct1.github.io/minisign/) to provide a simple, easier alternative to GPG.
[Homepage](https://www.kryptor.co.uk){ .md-button .md-button--primary } [Privacy Policy](https://www.kryptor.co.uk/features#privacy){ .md-button }
@ -223,7 +223,7 @@ Tools with command-line interfaces are useful for intergrating [shell scripts](h
OpenPGP is sometimes needed for specific tasks such as digitally signing and encrypting email. PGP has many features and is [complex](https://latacora.micro.blog/2019/07/16/the-pgp-problem.html) as it has been around a long time. For tasks such as signing or encrypting files, we suggest the above options.
When encrypting with PGP, the user has the option to configure different options in their `gpg.conf` file. We recommend staying with the standard options specified in the [GnuPG user FAQ](https://www.gnupg.org/faq/gnupg-faq.html#new_user_gpg_conf).
When encrypting with PGP, you have the option to configure different options in your `gpg.conf` file. We recommend staying with the standard options specified in the [GnuPG user FAQ](https://www.gnupg.org/faq/gnupg-faq.html#new_user_gpg_conf).
!!! tip "Use future defaults when generating a key"
@ -257,7 +257,7 @@ When encrypting with PGP, the user has the option to configure different options
![GPG4win logo](assets/img/encryption-software/gpg4win.svg){ align=right }
**GPG4win** is a package for Windows from [Intevation and g10 Code](https://gpg4win.org/impressum.html). It includes [various tools](https://gpg4win.org/about.html) that assist PGP users on Microsoft Windows. The project was initiated and originally [funded by](https://web.archive.org/web/20190425125223/https://joinup.ec.europa.eu/news/government-used-cryptography) Germany's Federal Office for Information Security (BSI) in 2005.
**GPG4win** is a package for Windows from [Intevation and g10 Code](https://gpg4win.org/impressum.html). It includes [various tools](https://gpg4win.org/about.html) that can assist you in using GPG on Microsoft Windows. The project was initiated and originally [funded by](https://web.archive.org/web/20190425125223/https://joinup.ec.europa.eu/news/government-used-cryptography) Germany's Federal Office for Information Security (BSI) in 2005.
[Homepage](https://gpg4win.org){ .md-button .md-button--primary } [Privacy Policy](https://gpg4win.org/privacy-policy.html){ .md-button }

12
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@ -2,7 +2,7 @@
title: "Linux"
icon: fontawesome/brands/linux
---
Linux distributions are commonly recommended for privacy protection and user freedom.
Linux distributions are commonly recommended for privacy protection and software freedom.
- [General Linux Overview :material-arrow-right:](linux-desktop/overview.md)
@ -16,7 +16,7 @@ If you don't already use Linux, below are some distributions we suggest trying o
![Fedora logo](assets/img/linux-desktop/fedora-workstation.svg){ align=right }
**Fedora Workstation** is our recommended distribution for users new to Linux. Fedora generally adopts newer technologies before other distributions e.g., [Wayland](https://wayland.freedesktop.org/), [PipeWire](https://pipewire.org), and soon, [FS-Verity](https://fedoraproject.org/wiki/Changes/FsVerityRPM). These new technologies often come with improvements in security, privacy, and usability in general.
**Fedora Workstation** is our recommended distribution for people new to Linux. Fedora generally adopts newer technologies before other distributions e.g., [Wayland](https://wayland.freedesktop.org/), [PipeWire](https://pipewire.org), and soon, [FS-Verity](https://fedoraproject.org/wiki/Changes/FsVerityRPM). These new technologies often come with improvements in security, privacy, and usability in general.
[Homepage](https://getfedora.org/){ .md-button .md-button--primary }
@ -34,7 +34,7 @@ Fedora has a semi-rolling release cycle. While some packages like [GNOME](https:
[Homepage](https://get.opensuse.org/tumbleweed/){ .md-button .md-button--primary }
Tumbleweed follows a rolling release model where each update is released as a snapshot of the distribution. When the user upgrades their system, a new snapshot is downloaded. Each snapshot is run through a series of automated tests by [openQA](https://openqa.opensuse.org) to ensure its quality.
Tumbleweed follows a rolling release model where each update is released as a snapshot of the distribution. When you upgrade your system, a new snapshot is downloaded. Each snapshot is run through a series of automated tests by [openQA](https://openqa.opensuse.org) to ensure its quality.
### Arch Linux
@ -48,7 +48,7 @@ Tumbleweed follows a rolling release model where each update is released as a sn
Arch Linux has a rolling release cycle. There is no fixed release schedule and packages are updated very frequently.
Being a DIY distribution, the user is [expected to set up and maintain](#arch-based-distributions) their system. Arch has an [official installer](https://wiki.archlinux.org/title/Archinstall) to make the installation process a little easier.
Being a DIY distribution, you are [expected to set up and maintain](#arch-based-distributions) your system on your own. Arch has an [official installer](https://wiki.archlinux.org/title/Archinstall) to make the installation process a little easier.
A large portion of [Arch Linux’s packages](https://reproducible.archlinux.org) are [reproducible](https://reproducible-builds.org).
@ -66,7 +66,7 @@ A large portion of [Arch Linux’s packages](https://reproducible.archlinux.org)
Silverblue (and Kinoite) differ from Fedora Workstation as they replace the [DNF](https://fedoraproject.org/wiki/DNF) package manager with a much more advanced alternative called [`rpm-ostree`](https://docs.fedoraproject.org/en-US/fedora/rawhide/system-administrators-guide/package-management/rpm-ostree/). The `rpm-ostree` package manager works by downloading a base image for the system, then overlaying packages over it in a [git](https://en.wikipedia.org/wiki/Git)-like commit tree. When the system is updated, a new base image is downloaded and the overlays will be applied to that new image.
After the update is complete the user will reboot the system into the new deployment. `rpm-ostree` keeps two deployments of the system so that a user can easily rollback if something breaks in the new deployment. There is also the option to pin more deployments as needed.
After the update is complete you will reboot the system into the new deployment. `rpm-ostree` keeps two deployments of the system so that you can easily rollback if something breaks in the new deployment. There is also the option to pin more deployments as needed.
[Flatpak](https://www.flatpak.org) is the primary package installation method on these distributions, as `rpm-ostree` is only meant to overlay packages that cannot stay inside of a container on top of the base image.
@ -132,7 +132,7 @@ By design, Tails is meant to completely reset itself after each reboot. Encrypte
Most Linux distributions have an installer option for enabling LUKS FDE upon installation.
If this option isn’t set at installation time, the user will have to backup their data and re-install, as encryption is applied after [disk partitioning](https://en.wikipedia.org/wiki/Disk_partitioning), but before [file systems](https://en.wikipedia.org/wiki/File_system) are formatted.
If this option isn’t set at installation time, you will have to backup your data and re-install, as encryption is applied after [disk partitioning](https://en.wikipedia.org/wiki/Disk_partitioning), but before [file systems](https://en.wikipedia.org/wiki/File_system) are formatted.
When securely erasing storage devices such as a Solid-state drive (SSD) you should use the [ATA Secure Erase](https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase) command. This command can be issued from your UEFI setup. If the storage device is a regular hard drive (HDD), consider using [`nwipe`](https://en.wikipedia.org/wiki/Nwipe).

2
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@ -44,7 +44,7 @@ The [hardened memory allocator](https://github.com/GrapheneOS/hardened_malloc) f
## Umask
If you are not using openSUSE, consider changing the default [umask](https://en.wikipedia.org/wiki/Umask) for both regular users and root to 077. Changing umask to 077 can break snapper on openSUSE and is **not** recommended.
If you are not using openSUSE, consider changing the default [umask](https://en.wikipedia.org/wiki/Umask) for both regular user accounts and root to 077. Changing umask to 077 can break snapper on openSUSE and is **not** recommended.
## Mountpoint hardening

8
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@ -60,13 +60,13 @@ There is often some confusion about “security-focused” distributions and “
## Arch-based distributions
Arch based distributions are not recommended for new users, regardless of the distribution. Arch does not have an distribution update mechanism for the underlying software choices. As a result the user of the system must stay aware with current trends and adopt technologies as they supersede older practices.
Arch based distributions are not recommended for those new to Linux, regardless of the distribution. Arch does not have an distribution update mechanism for the underlying software choices. As a result you have to stay aware with current trends and adopt technologies as they supersede older practices on your own.
For a secure system, the user is also expected to have sufficient Linux knowledge to properly set up security for their system such as adopting a [mandatory access control](https://en.wikipedia.org/wiki/Mandatory_access_control) system, setting up [kernel module](https://en.wikipedia.org/wiki/Loadable_kernel_module#Security) blacklists, hardening boot parameters, manipulating [sysctl](https://en.wikipedia.org/wiki/Sysctl) parameters, and knowing what components they need such as [Polkit](https://en.wikipedia.org/wiki/Polkit).
For a secure system, you are also expected to have sufficient Linux knowledge to properly set up security for their system such as adopting a [mandatory access control](https://en.wikipedia.org/wiki/Mandatory_access_control) system, setting up [kernel module](https://en.wikipedia.org/wiki/Loadable_kernel_module#Security) blacklists, hardening boot parameters, manipulating [sysctl](https://en.wikipedia.org/wiki/Sysctl) parameters, and knowing what components they need such as [Polkit](https://en.wikipedia.org/wiki/Polkit).
Any user using the [Arch User Repository (AUR)](https://wiki.archlinux.org/title/Arch_User_Repository), **must** be comfortable in auditing PKGBUILDs that they install from that service. AUR packages are user-produced content and are not vetted in any way and therefore are vulnerable to software supply chain attacks, which has in fact happened [in the past](https://www.bleepingcomputer.com/news/security/malware-found-in-arch-linux-aur-package-repository/). AUR should always be used sparingly and often there is a lot of bad advice on various pages which direct users to blindly use [AUR helpers](https://wiki.archlinux.org/title/AUR_helpers) without sufficient warning. Similar warnings apply to using third party Personal Package Archives (PPAs) on Debian based distributions or Community Projects (COPR) on Fedora.
Anyone using the [Arch User Repository (AUR)](https://wiki.archlinux.org/title/Arch_User_Repository), **must** be comfortable in auditing PKGBUILDs that they install from that service. AUR packages are community-produced content and are not vetted in any way, and therefore are vulnerable to software supply chain attacks, which has in fact happened [in the past](https://www.bleepingcomputer.com/news/security/malware-found-in-arch-linux-aur-package-repository/). AUR should always be used sparingly and often there is a lot of bad advice on various pages which direct people to blindly use [AUR helpers](https://wiki.archlinux.org/title/AUR_helpers) without sufficient warning. Similar warnings apply to using third party Personal Package Archives (PPAs) on Debian based distributions or Community Projects (COPR) on Fedora.
For advanced users, we only recommend Arch Linux, not any of its derivatives. We recommend against these two Arch derivatives specifically:
If you are experienced with Linux and wish to use an Arch-based distribution, we only recommend Arch Linux proper, not any of its derivatives. We recommend against these two Arch derivatives specifically:
- **Manjaro**: This distribution holds packages back for 2 weeks to make sure that their own changes don’t break, not to make sure that upstream is stable. When AUR packages are used, they are often built against the latest [libraries](https://en.wikipedia.org/wiki/Library_(computing)) from Arch’s repositories.
- **Garuda**: They use [Chaotic-AUR](https://aur.chaotic.cx/) which automatically and blindly compiles packages from the AUR. There is no verification process to make sure that the AUR packages don’t suffer from supply chain attacks.

10
docs/linux-desktop/sandboxing.en.md
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@ -8,7 +8,7 @@ Some sandboxing solutions for desktop Linux distributions do exist, however they
[Flatpak](https://flatpak.org) aims to be a universal package manager for Linux. One of its main goals is to provide a universal package format which can be used in most Linux distributions. It provides some [permission control](https://docs.flatpak.org/en/latest/sandbox-permissions.html). It has been [pointed out](https://madaidans-insecurities.github.io/linux.html#flatpak) that Flatpak sandboxing could be improved as particular Flatpaks often have greater permission than required. There does seem to be [some agreement](https://theevilskeleton.gitlab.io/2021/02/11/response-to-flatkill-org.html) that this is the case.
Users can restrict applications further by issuing [Flatpak overrides](https://docs.flatpak.org/en/latest/flatpak-command-reference.html#flatpak-override). This can be done with the command-line or by using [Flatseal](https://flathub.org/apps/details/com.github.tchx84.Flatseal). Some sample overrides are provided by [tommytran732](https://github.com/tommytran732/Flatpak-Overrides) and [rusty-snake](https://github.com/rusty-snake/kyst/tree/main/flatpak).
You can restrict applications further by issuing [Flatpak overrides](https://docs.flatpak.org/en/latest/flatpak-command-reference.html#flatpak-override). This can be done with the command-line or by using [Flatseal](https://flathub.org/apps/details/com.github.tchx84.Flatseal). Some sample overrides are provided by [tommytran732](https://github.com/tommytran732/Flatpak-Overrides) and [rusty-snake](https://github.com/rusty-snake/kyst/tree/main/flatpak).
We generally recommend revoking access to:
@ -18,9 +18,9 @@ We generally recommend revoking access to:
If an application works natively with Wayland (and not running through the [XWayland](https://wayland.freedesktop.org/xserver.html) compatibility layer), consider revoking its access to the X11 (`socket=x11`) and [Inter-process communications (IPC)](https://en.wikipedia.org/wiki/Unix_domain_socket) socket (`share=ipc`) as well.
We also recommend restricting broad filesystem permissions such as `filesystem=home` and `filesystem=host` which should be revoked and replaced with just the directories that the app needs to access. Some applications like [VLC](https://www.flathub.org/apps/details/org.videolan.VLC) implement the [Portals](https://docs.flatpak.org/en/latest/portal-api-reference.html) [API](https://en.wikipedia.org/wiki/API), which allows a file manager to pass files to the Flatpak application (e.g. VLC) without specific filesystem access privileges. VLC is only able to access the specific file that the user wants to open, rather than requiring privileges to particular locations.
We also recommend restricting broad filesystem permissions such as `filesystem=home` and `filesystem=host` which should be revoked and replaced with just the directories that the app needs to access. Some applications like [VLC](https://www.flathub.org/apps/details/org.videolan.VLC) implement the [Portals](https://docs.flatpak.org/en/latest/portal-api-reference.html) [API](https://en.wikipedia.org/wiki/API), which allows a file manager to pass files to the Flatpak application (e.g. VLC) without specific filesystem access privileges. VLC is only able to access the specific file that you want to open, rather than requiring privileges to particular locations.
Hard-coded access to some kernel interfaces like [`/sys`](https://en.wikipedia.org/wiki/Sysfs) and [`/proc`](https://en.wikipedia.org/wiki/Procfs#Linux) and weak [seccomp](https://en.wikipedia.org/wiki/Seccomp) filters unfortunately cannot be secured by the user with Flatpak.
Hard-coded access to some kernel interfaces like [`/sys`](https://en.wikipedia.org/wiki/Sysfs) and [`/proc`](https://en.wikipedia.org/wiki/Procfs#Linux) and weak [seccomp](https://en.wikipedia.org/wiki/Seccomp) filters unfortunately cannot be secured with Flatpak.
### Firejail
@ -44,7 +44,7 @@ Linux desktops don't usually include individual app confinement rules, unlike An
### Making your own policies/profiles
For advanced users, you can make your own AppArmor profiles, SELinux policies, Bubblewrap profiles, and [seccomp](https://en.wikipedia.org/wiki/Seccomp) blacklist to have better confinement of applications. This is quite a tedious and complicated task so we won’t go into detail about how to do it here, but we do have a few projects that you could use as reference.
You can make your own AppArmor profiles, SELinux policies, Bubblewrap profiles, and [seccomp](https://en.wikipedia.org/wiki/Seccomp) blacklist to have better confinement of applications. This is an advanced and sometimes tedious task, so we won’t go into detail about how to do it here, but we do have a few projects that you could use as reference.
- Whonix’s [AppArmor Everything](https://github.com/Whonix/apparmor-profile-everything)
- Krathalan’s [AppArmor profiles](https://github.com/krathalan/apparmor-profiles)
@ -61,6 +61,6 @@ Red Hat develops [Podman](https://docs.podman.io/en/latest/) and secures it with
Another option is [Kata containers](https://katacontainers.io/), where virtual machines masquerade as containers. Each Kata container has its own Linux kernel and is isolated from the host.
These container technologies can be useful even for enthusiastic home users who may want to run certain web app software on their local area network (LAN) such as [Vaultwarden](https://github.com/dani-garcia/vaultwarden) or images provided by [linuxserver.io](https://www.linuxserver.io) to increase privacy by decreasing dependence on various web services.
These container technologies can be useful for those who may want to run certain web app software on their local area network (LAN) such as [Vaultwarden](https://github.com/dani-garcia/vaultwarden) or images provided by [linuxserver.io](https://www.linuxserver.io) to increase privacy by decreasing dependence on various web services.
--8<-- "includes/abbreviations.en.md"

2
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@ -14,7 +14,7 @@ When sharing files, be sure to remove associated metadata. Image files commonly
**MAT2** is free software, which allows the metadata to be removed from image, audio, torrent, and document file types. It provides both a command line tool and a graphical user interface via an [extension for Nautilus](https://0xacab.org/jvoisin/mat2/-/tree/master/nautilus), the default file manager of [GNOME](https://www.gnome.org), and [Dolphin](https://0xacab.org/jvoisin/mat2/-/tree/master/dolphin), the default file manager of [KDE](https://kde.org).
For Linux users, a third party graphical tool [Metadata Cleaner](https://gitlab.com/rmnvgr/metadata-cleaner) powered by MAT2 exists and is [available on Flathub](https://flathub.org/apps/details/fr.romainvigier.MetadataCleaner).
On Linux, a third party graphical tool [Metadata Cleaner](https://gitlab.com/rmnvgr/metadata-cleaner) powered by MAT2 exists and is [available on Flathub](https://flathub.org/apps/details/fr.romainvigier.MetadataCleaner).
[Homepage](https://0xacab.org/jvoisin/mat2){ .md-button .md-button--primary }

12
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@ -29,7 +29,7 @@ Signal has minimal metadata when [Sealed Sender](https://signal.org/blog/sealed-
Signal requires your phone number as a personal identifier.
[Sealed Sender](https://signal.org/blog/sealed-sender/) is only enabled for users on your contact list but can be enabled for all recipients with the increased risk of receiving spam.
[Sealed Sender](https://signal.org/blog/sealed-sender/) is only enabled for people in your contacts list, but can be enabled for all recipients with the increased risk of receiving spam.
The protocol was independently [audited](https://eprint.iacr.org/2016/1013.pdf) in 2016. The specification for the Signal protocol can be found in their [documentation](https://signal.org/docs/).
@ -120,7 +120,7 @@ Session has a [whitepaper](https://arxiv.org/pdf/2002.04609.pdf) describing the
## Types of Communication Networks
There are several network architectures commonly used to relay messages between users. These networks can provide different different privacy guarantees, which is why it's worth considering your [threat model](https://en.wikipedia.org/wiki/Threat_model) when making a decision about which app to use.
There are several network architectures commonly used to relay messages between people. These networks can provide different different privacy guarantees, which is why it's worth considering your [threat model](https://en.wikipedia.org/wiki/Threat_model) when making a decision about which app to use.
### Centralized Networks
@ -140,7 +140,7 @@ Some self-hosted messengers allow you to set up your own server. Self-hosting ca
**Disadvantages:**
- Can include [restricted control or access](https://drewdevault.com/2018/08/08/Signal.html). This can include things like:
- Being [forbidden from connecting third-party clients](https://github.com/LibreSignal/LibreSignal/issues/37#issuecomment-217211165) to the centralized network that might provide for greater customization or better user experience. Often defined in Terms and Conditions of usage.
- Being [forbidden from connecting third-party clients](https://github.com/LibreSignal/LibreSignal/issues/37#issuecomment-217211165) to the centralized network that might provide for greater customization or a better experience. Often defined in Terms and Conditions of usage.
- Poor or no documentation for third-party developers.
- The [ownership](https://web.archive.org/web/20210729191953/https://blog.privacytools.io/delisting-wire/), privacy policy, and operations of the service can change easily when a single entity controls it, potentially compromising the service later on.
- Self hosting requires effort and knowledge of how to set up a service.
@ -151,7 +151,7 @@ Some self-hosted messengers allow you to set up your own server. Self-hosting ca
Federated messengers use multiple, independent, decentralized servers that are able to talk to each other (email is one example of a federated service). Federation allows system administrators to control their own server and still be a part of the larger communications network.
When self-hosted, users of a federated server can discover and communicate with users of other servers, although some servers may choose to remain private by being non-federated (e.g., work team server).
When self-hosted, members of a federated server can discover and communicate with members of other servers, although some servers may choose to remain private by being non-federated (e.g., work team server).
**Advantages:**
@ -166,7 +166,7 @@ When self-hosted, users of a federated server can discover and communicate with
- Due to the previous point, features can be lacking, or incomplete or working in unexpected ways compared to centralized platforms, such as message relay when offline or message deletion.
- Some metadata may be available (e.g., information like "who is talking to whom," but not actual message content if E2EE is used).
- Federated servers generally require trusting your server's administrator. They may be a hobbyist or otherwise not a "security professional," and may not serve standard documents like a privacy policy or terms of service detailing how your data is utilized.
- Server administrators sometimes choose to block other servers, which are a source of unmoderated abuse or break general rules of accepted behavior. This will hinder your ability to communicate with users on those servers.
- Server administrators sometimes choose to block other servers, which are a source of unmoderated abuse or break general rules of accepted behavior. This will hinder your ability to communicate with members of those servers.
### Peer-to-Peer Networks
@ -178,7 +178,7 @@ Clients (peers) usually find each other through the use of a [distributed comput
Once a peer has found a route to its contact via any of these methods, a direct connection between them is made. Although messages are usually encrypted, an observer can still deduce the location and identity of the sender and recipient.
P2P networks do not use servers, as users communicate directly between each others, and hence cannot be self-hosted. However, some additional services may rely on centralized servers, such as users discovery or offline messages relaying, which can benefit from self-hosting.
P2P networks do not use servers, as peers communicate directly between each other, and hence cannot be self-hosted. However, some additional services may rely on centralized servers, such as user discovery or relaying offline messages, which can benefit from self-hosting.
**Advantages:**

6
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@ -56,16 +56,16 @@ The company is based in the :flag_gb: UK. According to their [Privacy Policy](ht
![SearXNG logo](assets/img/search-engines/searxng.svg){ align=right }
**SearXNG** is an open-source, self-hostable, metasearch engine, aggregating the results of other search engines while not storing information about its users. It is an actively maintained fork of [SearX](https://github.com/searx/searx). There is a [list of public instances](https://searx.space/).
**SearXNG** is an open-source, self-hostable, metasearch engine, aggregating the results of other search engines while not storing any information itself. It is an actively maintained fork of [SearX](https://github.com/searx/searx). There is a [list of public instances](https://searx.space/).
[Homepage](https://searxng.org){ .md-button .md-button--primary }
??? downloads
- [:fontawesome-brands-github: Source](https://github.com/searxng/searxng)
SearXNG is a proxy between the user and the search engines it aggregates from. Your search queries will still be sent to the search engines that SearXNG gets its results from.
SearXNG is a proxy between you and the search engines it aggregates from. Your search queries will still be sent to the search engines that SearXNG gets its results from.
When self-hosting, it is important that you have other people using your instance so that the queries would blend in. You should be careful with where and how you are hosting SearXNG, as users looking up illegal content on your instance could draw unwanted attention from authorities.
When self-hosting, it is important that you have other people using your instance so that the queries would blend in. You should be careful with where and how you are hosting SearXNG, as people looking up illegal content on your instance could draw unwanted attention from authorities.
When you are using a SearXNG instance, be sure to go read their privacy policy. Since SearXNG instances may be modified by their owners, they do not necessarily reflect their privacy policy. Some instances run as a Tor hidden service, which may grant some privacy as long as your search queries does not contain PII.

20
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@ -18,13 +18,13 @@ Receiving OTP codes via SMS or email are one of the weaker ways to secure your a
Push notification MFA takes the form of a message being sent to an app on your phone asking you to confirm new account logins. This method is a lot better than SMS or email, since an attacker typically wouldn't be able to get these push notifications without having an already logged-in device, which means they would need to compromise one of your other devices first.
We all make mistakes, and there is the risk that a user may accept the login attempt by accident. Push notification login authorizations are typically sent to *all* your devices at once, widening the availability of the MFA code if you have many devices.
We all make mistakes, and there is the risk that you might accept the login attempt by accident. Push notification login authorizations are typically sent to *all* your devices at once, widening the availability of the MFA code if you have many devices.
The security of push notification MFA is dependent on both the quality of the app, the server component and the trust of the developer who produces it. Installing an app may also require you to accept invasive privileges that grant access to other data on your device. An individual app also requires that you have a specific app for each service which may not require a password to open, unlike a good TOTP generator app.
### Time-based One-time Password (TOTP)
TOTP is one of the most commons form of MFA available. When a user sets up TOTP they are generally required to scan a [QR Code](https://en.wikipedia.org/wiki/QR_code) which establishes a "[shared secret](https://en.wikipedia.org/wiki/Shared_secret)" with the service that they intend to use. The shared secret is secured inside of the authenticator app's data, and is sometimes protected by a password.
TOTP is one of the most commons form of MFA available. When you set up TOTP you are generally required to scan a [QR Code](https://en.wikipedia.org/wiki/QR_code) which establishes a "[shared secret](https://en.wikipedia.org/wiki/Shared_secret)" with the service that you intend to use. The shared secret is secured inside of the authenticator app's data, and is sometimes protected by a password.
The time-limited code is then derived from the shared secret and the current time. As the code is only valid for a short time, without access to the shared secret an adversary cannot generate new codes.
@ -44,9 +44,9 @@ These keys are generally multi-function and provide a number of methods to authe
#### Yubico OTP
Yubico OTP is an authentication protocol typically implemented in hardware security keys. When a user decides to use Yubico OTP, the key will generate a public ID, private ID, and a Secret Key which is then uploaded to the Yubico OTP server.
Yubico OTP is an authentication protocol typically implemented in hardware security keys. When you decide to use Yubico OTP, the key will generate a public ID, private ID, and a Secret Key which is then uploaded to the Yubico OTP server.
When logging into a website, all a user needs to do is to physically touch the security key. The security key will emulate a keyboard and print out a one-time password into the password field.
When logging into a website, all you need to do is to physically touch the security key. The security key will emulate a keyboard and print out a one-time password into the password field.
The service will then forward the one-time password to the Yubico OTP server for validation. A counter is incremented both on the key and Yubico's validation server. The OTP can only only be used once, and when a successful authentication occurs the counter is increased which prevents reuse of the OTP. Yubico provides a [detailed document](https://developers.yubico.com/OTP/OTPs_Explained.html) about the process.
@ -56,7 +56,7 @@ The service will then forward the one-time password to the Yubico OTP server for
There are some benefits and disadvantages to using Yubico OTP when compared to TOTP.
The Yubico validation server is a cloud based service, and users place trust in Yubico that they are storing data securely and not profiling users. The public ID associated with Yubico OTP is reused on every website and could be another avenue for third parties to profile the user. Like TOTP, Yubico OTP does not provide phishing resistance.
The Yubico validation server is a cloud based service, and you're placing trust in Yubico that they are storing data securely and not profiling you. The public ID associated with Yubico OTP is reused on every website and could be another avenue for third parties to profile you. Like TOTP, Yubico OTP does not provide phishing resistance.
If your threat model requires you to have different identities on different websites, **do not** use Yubico OTP with the same hardware security key across those websites as public ID is unique to each security key.
@ -66,13 +66,13 @@ If your threat model requires you to have different identities on different webs
U2F and FIDO2 refer to the [Client to Authenticator Protocol](https://en.wikipedia.org/wiki/Client_to_Authenticator_Protocol), which is the protocol between the security key and the computer, such as a laptop or phone. It complements WebAuthn which is the component used to authenticate with the website (the "Relying Party") you're trying to log in on.
WebAuthn is the most secure and private form of second factor authentication. While the user experience is similar to Yubico OTP, the key does not print out a one-time password and validate with a third party server. Instead it uses [public key cryptography](https://en.wikipedia.org/wiki/Public-key_cryptography) for authentication.
WebAuthn is the most secure and private form of second factor authentication. While the authentication experience is similar to Yubico OTP, the key does not print out a one-time password and validate with a third party server. Instead it uses [public key cryptography](https://en.wikipedia.org/wiki/Public-key_cryptography) for authentication.
<figure markdown>
![FIDO](../assets/img/multi-factor-authentication/fido.png)
</figure>
When a user creates an account the public key is sent to the service, then when the user logs in, the service will require the user to "sign" some data with their private key. The benefit of this is that no password data is ever stored by the service, so there is nothing for an adversary to steal.
When you create an account the public key is sent to the service, then when you log in, the service will require you to "sign" some data with your private key. The benefit of this is that no password data is ever stored by the service, so there is nothing for an adversary to steal.
This presentation discusses the history of password authentication, the pitfalls (such as password reuse), and discussion of FIDO2 and [WebAuthn](https://webauthn.guide) standards.
@ -86,9 +86,9 @@ This presentation discusses the history of password authentication, the pitfalls
FIDO2 and WebAuthn have superior security and privacy properties when compared to any MFA methods.
Typically for web services it is used with WebAuthn which is a part of the [W3C recommendations](https://en.wikipedia.org/wiki/World_Wide_Web_Consortium#W3C_recommendation_(REC)). It uses public key authentication and is more secure than shared secrets used in Yubico OTP and TOTP methods, as it includes the origin name (usually, the domain name) during authentication. Attestation is provided to protect the user from phishing, as it helps them to determine that they are using the authentic service and not a fake copy.
Typically for web services it is used with WebAuthn which is a part of the [W3C recommendations](https://en.wikipedia.org/wiki/World_Wide_Web_Consortium#W3C_recommendation_(REC)). It uses public key authentication and is more secure than shared secrets used in Yubico OTP and TOTP methods, as it includes the origin name (usually, the domain name) during authentication. Attestation is provided to protect you from phishing attacks, as it helps you to determine that you are using the authentic service and not a fake copy.
Unlike Yubico OTP, WebAuthn does not use any public ID, so the key is **not** identifiable across different websites. It also does not use any third party cloud server for authentication. All communication is completed between the key and the website the user is logging into. FIDO also uses a counter which is incremented upon use in order to prevent session reuse and cloned keys.
Unlike Yubico OTP, WebAuthn does not use any public ID, so the key is **not** identifiable across different websites. It also does not use any third party cloud server for authentication. All communication is completed between the key and the website you are logging into. FIDO also uses a counter which is incremented upon use in order to prevent session reuse and cloned keys.
If a website or service supports WebAuthn for the authentication, it is highly recommended that you use it over any other form of MFA.
@ -146,7 +146,7 @@ The command will prevent an adversary from bypassing MFA when the computer boots
If the hostname of your system changes (such as due to DHCP), you would be unable to login. It is vital that you set up a proper hostname for your computer before following this guide.
The `pam_u2f` module on Linux can provide two factor authentication for user login on most popular Linux distributions. If you have a hardware security key that supports U2F, you can set up MFA authentication for your login. Yubico has a guide [Ubuntu Linux Login Guide - U2F](https://support.yubico.com/hc/en-us/articles/360016649099-Ubuntu-Linux-Login-Guide-U2F) which should work on any distribution. The package manager commands—such as `apt-get`—and package names may however differ. This guide does **not** apply to Qubes OS.
The `pam_u2f` module on Linux can provide two factor authentication for logging in on most popular Linux distributions. If you have a hardware security key that supports U2F, you can set up MFA authentication for your login. Yubico has a guide [Ubuntu Linux Login Guide - U2F](https://support.yubico.com/hc/en-us/articles/360016649099-Ubuntu-Linux-Login-Guide-U2F) which should work on any distribution. The package manager commands—such as `apt-get`—and package names may however differ. This guide does **not** apply to Qubes OS.
### Qubes OS

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@ -12,7 +12,7 @@ If you are currently browsing clearnet and want to access the dark web, this sec
![Tor logo](assets/img/self-contained-networks/tor.svg){ align=right }
The **Tor** network is a group of volunteer-operated servers that allows people to improve their privacy and security on the Internet. Tor's users employ this network by connecting through a series of virtual tunnels rather than making a direct connection, thus allowing both organizations and individuals to share information over public networks without compromising their privacy. Tor is an effective censorship circumvention tool.
The **Tor** network is a group of volunteer-operated servers that allows people to improve their privacy and security on the Internet. You use the Tor network by connecting through a series of virtual tunnels rather than making a direct connection to the site you're trying to visit, thus allowing both organizations and individuals to share information over public networks without compromising their privacy. Tor is an effective censorship circumvention tool.
[Homepage](https://www.torproject.org){ .md-button .md-button--primary } [:pg-tor:](http://2gzyxa5ihm7nsggfxnu52rck2vv4rvmdlkiu3zzui5du4xyclen53wid.onion){ .md-button }

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@ -120,7 +120,7 @@ The lack of *good* metadata removal apps on the App Store is what makes this sol
## Windows
Windows allows users to place files in a **SendTo** folder which then appear in the *Send to* context menu. This guide will show you how to add an [ExifTool](../metadata-removal-tools.md#exiftool) batch script to this menu.
Windows allows you to place files in a **SendTo** folder which then appear in the *Send to* context menu. This guide will show you how to add an [ExifTool](../metadata-removal-tools.md#exiftool) batch script to this menu.
![Send to metadata removal shortcut](../assets/img/integrating-metadata-removal/preview-windows.jpg)

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@ -11,7 +11,7 @@ When you visit a website, a numerical address is returned. For example, when you
DNS has existed since the [early days](https://en.wikipedia.org/wiki/Domain_Name_System#History) of the Internet. DNS requests made to and from DNS servers are **not** generally encrypted. In a residential setting, a customer is given servers by the ISP via [DHCP](https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol).
Unencrypted DNS requests are able to be easily **surveilled** and **modified** in transit. In some parts of the world, ISPs are ordered to do primitive [DNS filtering](https://en.wikipedia.org/wiki/DNS_blocking). When a user requests the IP address of a domain that is blocked, the server may not respond or may respond with a different IP address. As the DNS protocol is not encrypted, the ISP (or any network operator) can use [DPI](https://en.wikipedia.org/wiki/Deep_packet_inspection) to monitor requests. ISPs can also block requests based on common characteristics, regardless of which DNS server is used. Unencrypted DNS always uses [port](https://en.wikipedia.org/wiki/Port_(computer_networking)) 53 and always uses UDP.
Unencrypted DNS requests are able to be easily **surveilled** and **modified** in transit. In some parts of the world, ISPs are ordered to do primitive [DNS filtering](https://en.wikipedia.org/wiki/DNS_blocking). When you request the IP address of a domain that is blocked, the server may not respond or may respond with a different IP address. As the DNS protocol is not encrypted, the ISP (or any network operator) can use [DPI](https://en.wikipedia.org/wiki/Deep_packet_inspection) to monitor requests. ISPs can also block requests based on common characteristics, regardless of which DNS server is used. Unencrypted DNS always uses [port](https://en.wikipedia.org/wiki/Port_(computer_networking)) 53 and always uses UDP.
Below, we discuss and provide a tutorial to prove what an outside observer may see using regular unencrypted DNS and [encrypted DNS](#what-is-encrypted-dns).

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@ -70,19 +70,19 @@ Find a no-logging VPN operator who isn’t out to sell or read your web traffic.
Mullvad supports the WireGuard® protocol. [WireGuard](https://www.wireguard.com) is a newer protocol that utilizes state-of-the-art [cryptography](https://www.wireguard.com/protocol/). Additionally, WireGuard aims to be simpler and more performant.
Mullvad [recommends](https://mullvad.net/en/help/why-wireguard/) the use of WireGuard with their service. It is the default or only protocol on Mullvad's Android, iOS, macOS, and Linux apps, whereas Windows users have to [manually enable](https://mullvad.net/en/help/how-turn-wireguard-mullvad-app/) WireGuard. Mullvad also offers a WireGuard configuration generator for use with the official WireGuard [apps](https://www.wireguard.com/install/).
Mullvad [recommends](https://mullvad.net/en/help/why-wireguard/) the use of WireGuard with their service. It is the default or only protocol on Mullvad's Android, iOS, macOS, and Linux apps, but on Windows you have to [manually enable](https://mullvad.net/en/help/how-turn-wireguard-mullvad-app/) WireGuard. Mullvad also offers a WireGuard configuration generator for use with the official WireGuard [apps](https://www.wireguard.com/install/).
??? check "IPv6 Support"
Mullvad supports the future of networking [IPv6](https://en.wikipedia.org/wiki/IPv6). Their network allows users to [access services hosted on IPv6](https://mullvad.net/en/blog/2014/9/15/ipv6-support/) as opposed to other providers who block IPv6 connections.
Mullvad supports the future of networking [IPv6](https://en.wikipedia.org/wiki/IPv6). Their network allows you to [access services hosted on IPv6](https://mullvad.net/en/blog/2014/9/15/ipv6-support/) as opposed to other providers who block IPv6 connections.
??? check "Remote Port Forwarding"
Remote [port forwarding](https://en.wikipedia.org/wiki/Port_forwarding) is allowed for users who make one-time payments, and not allowed for accounts with a recurring/subscription-based payment method. This is to prevent Mullvad from being able to identify port users based on stored subscription information. See [Port forwarding with Mullvad VPN](https://mullvad.net/help/port-forwarding-and-mullvad/) for more information.
Remote [port forwarding](https://en.wikipedia.org/wiki/Port_forwarding) is allowed for people who make one-time payments, but not allowed for accounts with a recurring/subscription-based payment method. This is to prevent Mullvad from being able to identify you based on your port usage and stored subscription information. See [Port forwarding with Mullvad VPN](https://mullvad.net/help/port-forwarding-and-mullvad/) for more information.
??? check "Mobile Clients"
Mullvad has published [App Store](https://apps.apple.com/app/mullvad-vpn/id1488466513) and [Google Play](https://play.google.com/store/apps/details?id=net.mullvad.mullvadvpn) clients, both supporting an easy-to use interface as opposed to requiring users to manual configure their WireGuard connections. The mobile client on Android is also available in [F-Droid](https://f-droid.org/packages/net.mullvad.mullvadvpn), which ensures that it is compiled with [reproducible builds](https://www.f-droid.org/en/2019/05/05/trust-privacy-and-free-software.html).
Mullvad has published [App Store](https://apps.apple.com/app/mullvad-vpn/id1488466513) and [Google Play](https://play.google.com/store/apps/details?id=net.mullvad.mullvadvpn) clients, both supporting an easy-to use interface as opposed to requiring you to manually configure your WireGuard connection. The mobile client on Android is also available in [F-Droid](https://f-droid.org/packages/net.mullvad.mullvadvpn), which ensures that it is compiled with [reproducible builds](https://www.f-droid.org/en/2019/05/05/trust-privacy-and-free-software.html).
??? info "Additional Functionality"
@ -108,7 +108,7 @@ Find a no-logging VPN operator who isn’t out to sell or read your web traffic.
??? check "Independently Audited"
As of January 2020 ProtonVPN has undergone an independent audit by SEC Consult. SEC Consult found some medium and low risk vulnerabilities in ProtonVPN's Windows, Android, and iOS applications, all of which were "properly fixed" by ProtonVPN before the reports were published. None of the issues identified would have provided an attacker remote access to a user's device or traffic. You can view individual reports for each platform at [protonvpn.com](https://protonvpn.com/blog/open-source/).
As of January 2020 ProtonVPN has undergone an independent audit by SEC Consult. SEC Consult found some medium and low risk vulnerabilities in ProtonVPN's Windows, Android, and iOS applications, all of which were "properly fixed" by ProtonVPN before the reports were published. None of the issues identified would have provided an attacker remote access to your device or traffic. You can view individual reports for each platform at [protonvpn.com](https://protonvpn.com/blog/open-source/).
??? check "Open Source Clients"
@ -214,14 +214,14 @@ We require all our recommended VPN providers to provide OpenVPN configuration fi
- Support for strong protocols such as WireGuard & OpenVPN.
- Killswitch built in to clients.
- Multihop support. Multihopping is important to keep data private in case of a single node compromise.
- If VPN clients are provided, they should be [open source](https://en.wikipedia.org/wiki/Open_source), like the VPN software they generally have built into them. We believe that [source code](https://en.wikipedia.org/wiki/Source_code) availability provides greater transparency to the user about what their device is actually doing. We like to see these applications [available in F-Droid](https://www.f-droid.org/en/2019/05/05/trust-privacy-and-free-software.html).
- If VPN clients are provided, they should be [open source](https://en.wikipedia.org/wiki/Open_source), like the VPN software they generally have built into them. We believe that [source code](https://en.wikipedia.org/wiki/Source_code) availability provides greater transparency about what your device is actually doing. We like to see these applications [available in F-Droid](https://www.f-droid.org/en/2019/05/05/trust-privacy-and-free-software.html).
**Best Case:**
- WireGuard and OpenVPN support.
- Killswitch with highly configurable options (enable/disable on certain networks, on boot, etc.)
- Easy-to-use VPN clients
- Supports [IPv6](https://en.wikipedia.org/wiki/IPv6). We expect that servers will allow incoming connections via IPv6 and allow users to access services hosted on IPv6 addresses.
- Supports [IPv6](https://en.wikipedia.org/wiki/IPv6). We expect that servers will allow incoming connections via IPv6 and allow you to access services hosted on IPv6 addresses.
- Capability of [remote port forwarding](https://en.wikipedia.org/wiki/Port_forwarding#Remote_port_forwarding) assists in creating connections when using P2P ([Peer-to-Peer](https://en.wikipedia.org/wiki/Peer-to-peer)) filesharing software, Freenet, or hosting a server (e.g., Mumble).
### Privacy
@ -274,15 +274,15 @@ With the VPN providers we recommend we like to see responsible marketing.
**Minimum to Qualify:**
- Must self host analytics (no Google Analytics etc). The provider's site must also comply with [DNT (Do Not Track)](https://en.wikipedia.org/wiki/Do_Not_Track) for those users who want to opt-out.
- Must self host analytics (no Google Analytics etc). The provider's site must also comply with [DNT (Do Not Track)](https://en.wikipedia.org/wiki/Do_Not_Track) for people who want to opt-out.
Must not have any marketing which is irresponsible:
- Making guarantees of protecting anonymity 100%. When someone makes a claim that something is 100% it means there is no certainty for failure. We know users can quite easily deanonymize themselves in a number of ways, eg:
- Making guarantees of protecting anonymity 100%. When someone makes a claim that something is 100% it means there is no certainty for failure. We know people can quite easily deanonymize themselves in a number of ways, eg:
- Reusing personal information eg. (email accounts, unique pseudonyms etc) that they accessed without anonymity software (Tor, VPN etc)
- [Browser fingerprinting](https://en.wikipedia.org/wiki/Device_fingerprint#Browser_fingerprint)
- Claim that a single circuit VPN is "more anonymous" than Tor, which is a circuit of 3 or more hops that regularly changes.
- Use responsible language, eg it is okay to say that a VPN is "disconnected" or "not connected", however claiming that a user is "exposed", "vulnerable" or "compromised" is needless use of alarming language that may be incorrect. For example the visiting user might be on another VPN provider's service or using Tor.
- Use responsible language, eg it is okay to say that a VPN is "disconnected" or "not connected", however claiming that someone is "exposed", "vulnerable" or "compromised" is needless use of alarming language that may be incorrect. For example, that person might simply be on another VPN provider's service or using Tor.
**Best Case:**

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@ -69,7 +69,7 @@
*[VoIP]: Voice over IP (Internet Protocol)
*[W3C]: World Wide Web Consortium
*[XMPP]: Extensible Messaging and Presence Protocol
*[attack surface]: The attack surface of software or hardware is the sum of the different places an unauthorized user (the "attacker") can try to enter data to or extract data from.
*[attack surface]: The attack surface of software or hardware is the sum of the different places an attacker can try to enter data to or extract data from.
*[cgroups]: Control Groups
*[fork]: In software development, a fork is created when developers take a copy of source code from one software package and start independent development on it, creating a distinct and separate piece of software.
*[rolling release]: An update release cycle in which updates are released very frequently, instead of at set intervals.