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illustration of Proton Mail Android client security
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  • Nouveautés produits
  • Proton Mail
Our Android security model explains what our app does to secure Proton users’ data. This article outlines how we handle data and mitigate potential attacks.
Illustration of Proton Mail Bridge open source
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  • Nouveautés produits
  • Proton Mail
Our Bridge app is now open source for macOS, Windows, and Linux. Find links to the code and an independent security audit report.
Illustration of the Bridge security model
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  • Nouveautés produits
  • Proton Mail
You can use Proton Mail Bridge with IMAP/SMTP email clients. Here we explain the Bridge security architecture and how it protects your data.
protonmail bridge for linux
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  • Nouveautés produits
  • Proton Mail
Proton Mail Linux users can now connect their email accounts with the Thunderbird client.
Illustration of alternative routing
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  • Nouveautés produits
Proton provides anti-censorship measures to help users bypass DNS blocks. This article explains how these systems work.
Illustration of vulnerability disclosure
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  • Nouveautés produits
  • Proton Mail
This document describes the vulnerability disclosure policy our security team follows when we discover flaws in third-party products.
Illustration of a user using DKIM keys to stop a hacker spoofing their email.
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  • Nouveautés produits
  • Proton Mail
DKIM key management lets users rotate their keys manually, making it harder for attackers to spoof their email address.
An illustration of Proton Mail being blocked in Russia.
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  • Nouveautés produits
  • Proton Mail
Russia has periodically made attempts to block Proton Mail. Here is the current status and how you can bypass blocks placed on Proton Mail.
illustration of ProtonCalendar security model
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  • Nouveautés produits
  • Proton Calendar
The Proton Calendar uses an innovative encryption model to deliver the high level of security Proton users expect.
illustration of Proton Mail iOS open source
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  • Nouveautés produits
  • Proton Mail
We have released the Proton Mail iOS app as open source software as part of our commitment to transparency and supporting the developer community.
illustration of Proton Mail iOS client security
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  • Nouveautés produits
  • Proton Mail
We have published the Proton Mail iOS security model to highlight how Proton Mail for iOS has a higher level of security compared to typical apps.