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meta_title, title, icon, description, cover
| meta_title | title | icon | description | cover |
|---|---|---|---|---|
| 最高のプライベートで安全なクラウドストレージ プロバイダー - Privacy Guides | クラウドストレージ | material/file-cloud | Many cloud storage providers require your trust that they will not look at your files. これらはプライベートな選択肢です！ | cloud.png |
多くのクラウドストレージプロバイダーは、あなたのファイルを見ないことを完全に信頼する必要があります。 以下に示す選択肢は、安全なE2EEを実装することにより、信頼の必要性を排除します。
If these alternatives do not fit your needs, we suggest you look into using encryption software like Cryptomator with another cloud provider. Using Cryptomator in conjunction with any cloud provider (including these) may be a good idea to reduce the risk of encryption flaws in a provider's native clients.
??? question "Nextcloudをお探しですか？"
Nextcloud is [still a recommended tool](productivity.md) for self-hosting a file management suite, however we do not recommend third-party Nextcloud storage providers at the moment, because we do [not recommend](https://discuss.privacyguides.net/t/dont-recommend-nextcloud-e2ee/10352/29) Nextcloud's built-in E2EE functionality for home users.
Proton Drive
!!! recommendation
{ align=right }
**Proton Drive** は、人気の暗号化電子メール プロバイダーである [Proton Mail](email.md#proton-mail) が提供するスイスの暗号化クラウドストレージ プロバイダーです。
[:octicons-home-16: ホームページ](https://proton.me/drive){ class="md-button md-button--primary" }
[:octicons-eye-16:](https://proton.me/legal/privacy){ .card-link title="プライバシーポリシー" }
[:octicons-info-16:](https://proton.me/support/drive){ .card-link title=ドキュメント}
[:octicons-code-16:](https://github.com/ProtonMail/WebClients){ .card-link title="ソースコード" }
??? ダウンロード
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=me.proton.android.drive)
- [:simple-appstore: App Store](https://apps.apple.com/app/id1509667851)
Proton Drive Webアプリケーションは、 2021年にSecuritumによって独立して監査されています。 詳細は公開されませんでしたが、Securitumの認証状態は以下のとおりです。
監査人は、2つの深刻度の低い脆弱性を特定しました。 また、5つの一般的な提言が報告された。 同時に、侵入テスト中に重要なセキュリティ上の問題が確認されなかったことを報告しています。
Proton Driveの新しいモバイル クライアントはまだ第三者による公的な監査を受けていません。
Tresorit
!!! recommendation
{ align=right }
**Tresorit** は、2011年に設立されたスイスとハンガリーの暗号化クラウドストレージ プロバイダーです。 Tresoritはスイスの国営郵便局であるスイスポストが所有している。
[:octicons-home-16: Homepage](https://tresorit.com/){ class="md-button md-button--primary" }
[:octicons-eye-16:](https://tresorit.com/legal/privacy-policy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://support.tresorit.com/hc/en-us){ .card-link title=Documentation}
??? downloads
- [:simple-googleplay: Google Play](https://play.google.com/store/apps/details?id=com.tresorit.mobile)
- [:simple-appstore: App Store](https://apps.apple.com/app/apple-store/id722163232)
- [:simple-windows11: Windows](https://tresorit.com/download)
- [:simple-apple: macOS](https://tresorit.com/download)
- [:simple-linux: Linux](https://tresorit.com/download)
Tresorit has received a number of independent security audits:
- 2022: ISO/IEC 27001:20131 Compliance Certification by TÜV Rheinland InterCert Kft
- 2021: Penetration Testing by Computest
- This review assessed the security of the Tresorit web client, Android app, Windows app, and associated infrastructure.
- Computest discovered two vulnerabilities which have been resolved.
- 2019: Penetration Testing by Ernst & Young.
- This review analyzed the full source code of Tresorit and validated that the implementation matches the concepts described in Tresorit's white paper.
- Ernst & Young additionally tested the web, mobile, and desktop clients: "Test results found no deviation from Tresorit’s data confidentiality claims."
They have also received the Digital Trust Label, a certification from the Swiss Digital Initiative which requires passing 35 criteria related to security, privacy, and reliability.
基準
Please note we are not affiliated with any of the projects we recommend. In addition to our standard criteria, we have developed a clear set of requirements to allow us to provide objective recommendations. We suggest you familiarize yourself with this list before choosing to use a project, and conduct your own research to ensure it's the right choice for you.
!!! example "This section is new"
We are working on establishing defined criteria for every section of our site, and this may be subject to change. If you have any questions about our criteria, please [ask on our forum](https://discuss.privacyguides.net/latest) and don't assume we didn't consider something when making our recommendations if it is not listed here. There are many factors considered and discussed when we recommend a project, and documenting every single one is a work-in-progress.
最低要件
- Must enforce end-to-end encryption.
- Must offer a free plan or trial period for testing.
- Must support TOTP or FIDO2 multi-factor authentication, or Passkey logins.
- Must offer a web interface which supports basic file management functionality.
- Must allow for easy exports of all files/documents.
- Must use standard, audited encryption.
最良の場合
Our best-case criteria represents what we would like to see from the perfect project in this category. Our recommendations may not include any or all of this functionality, but those which do may rank higher than others on this page.
- Clients should be open-source.
- Clients should be audited in their entirety by an independent third-party.
- Should offer native clients for Linux, Android, Windows, macOS, and iOS.
- These clients should integrate with native OS tools for cloud storage providers, such as Files app integration on iOS, or DocumentsProvider functionality on Android.
- Should support easy file-sharing with other users.
- Should offer at least basic file preview and editing functionality on the web interface.
-
ISO/IEC 27001:2013 compliance relates to the company's information security management system and covers the sales, development, maintenance and support of their cloud services. ↩︎