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Move KB articles to blog (#1867)

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Jonah Aragon
2022-10-24 12:03:22 -05:00
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@ -13,8 +13,8 @@ The **Android Open Source Project** is an open-source mobile operating system le
These are the Android operating systems, devices, and apps we recommend to maximize your mobile device's security and privacy. To learn more about Android:
- [General Android Overview :material-arrow-right-drop-circle:](android/overview.md)
- [Why we recommend GrapheneOS over CalyxOS :material-arrow-right-drop-circle:](android/grapheneos-vs-calyxos.md)
- [General Android Overview :material-arrow-right-drop-circle:](os/android-overview.md)
- [Why we recommend GrapheneOS over CalyxOS :material-arrow-right-drop-circle:](https://blog.privacyguides.org/2022/04/21/grapheneos-or-calyxos/)
## AOSP Derivatives
@ -41,7 +41,7 @@ We recommend installing one of these custom Android operating systems on your de
[:octicons-code-16:](https://grapheneos.org/source){ .card-link title="Source Code" }
[:octicons-heart-16:](https://grapheneos.org/donate){ .card-link title=Contribute }
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](android/overview.md#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](os/android-overview.md#work-profile) or [user profile](os/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).
@ -64,7 +64,7 @@ Google Pixel phones are the only devices that currently meet GrapheneOS's [hardw
DivestOS has automated kernel vulnerability ([CVE](https://en.wikipedia.org/wiki/Common_Vulnerabilities_and_Exposures)) [patching](https://gitlab.com/divested-mobile/cve_checker), fewer proprietary blobs, and a custom [hosts](https://divested.dev/index.php?page=dnsbl) file. Its hardened WebView, [Mulch](https://gitlab.com/divested-mobile/mulch), enables [CFI](https://en.wikipedia.org/wiki/Control-flow_integrity) for all architectures and [network state partitioning](https://developer.mozilla.org/en-US/docs/Web/Privacy/State_Partitioning), and receives out-of-band updates.
DivestOS also includes kernel patches from GrapheneOS and enables all available kernel security features via [defconfig hardening](https://github.com/Divested-Mobile/DivestOS-Build/blob/master/Scripts/Common/Functions.sh#L758). All kernels newer than version 3.4 include full page [sanitization](https://lwn.net/Articles/334747/) and all ~22 Clang-compiled kernels have [`-ftrivial-auto-var-init=zero`](https://reviews.llvm.org/D54604?id=174471) enabled.
DivestOS implements some system hardening patches originally developed for GrapheneOS. DivestOS 16.0 and higher implements GrapheneOS's [`INTERNET`](https://developer.android.com/training/basics/network-ops/connecting) and SENSORS permission toggle, [hardened memory allocator](https://github.com/GrapheneOS/hardened_malloc), [exec-spawning](android/grapheneos-vs-calyxos.md#additional-hardening), [JNI](https://en.wikipedia.org/wiki/Java_Native_Interface) [constification](https://en.wikipedia.org/wiki/Const_(computer_programming)), and partial [bionic](https://en.wikipedia.org/wiki/Bionic_(software)) hardening patchsets. 17.1 and higher features GrapheneOS's per-network full [MAC randomization](https://en.wikipedia.org/wiki/MAC_address#Randomization) option, [`ptrace_scope`](https://www.kernel.org/doc/html/latest/admin-guide/LSM/Yama.html) control, and automatic reboot/Wi-Fi/Bluetooth [timeout options](https://grapheneos.org/features).
DivestOS implements some system hardening patches originally developed for GrapheneOS. DivestOS 16.0 and higher implements GrapheneOS's [`INTERNET`](https://developer.android.com/training/basics/network-ops/connecting) and SENSORS permission toggle, [hardened memory allocator](https://github.com/GrapheneOS/hardened_malloc), [exec-spawning](https://blog.privacyguides.org/2022/04/21/grapheneos-or-calyxos/#additional-hardening), [JNI](https://en.wikipedia.org/wiki/Java_Native_Interface) [constification](https://en.wikipedia.org/wiki/Const_(computer_programming)), and partial [bionic](https://en.wikipedia.org/wiki/Bionic_(software)) hardening patchsets. 17.1 and higher features GrapheneOS's per-network full [MAC randomization](https://en.wikipedia.org/wiki/MAC_address#Randomization) option, [`ptrace_scope`](https://www.kernel.org/doc/html/latest/admin-guide/LSM/Yama.html) control, and automatic reboot/Wi-Fi/Bluetooth [timeout options](https://grapheneos.org/features).
DivestOS uses F-Droid as its default app store. Normally, we would recommend avoiding F-Droid due to its numerous [security issues](#f-droid). However, doing so on DivestOS isn't viable; the developers update their apps via their own F-Droid repositories ([DivestOS Official](https://divestos.org/fdroid/official/?fingerprint=E4BE8D6ABFA4D9D4FEEF03CDDA7FF62A73FD64B75566F6DD4E5E577550BE8467) and [DivestOS WebView](https://divestos.org/fdroid/webview/?fingerprint=FB426DA1750A53D7724C8A582B4D34174E64A84B38940E5D5A802E1DFF9A40D2)). We recommend disabling the official F-Droid app and using [Neo Store](https://github.com/NeoApplications/Neo-Store/) with the DivestOS repositories enabled to keep those components up to date. For other apps, our recommended methods of obtaining them still apply.