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illustration of Proton Mail Android client security
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  • Proton Mail
Proton Mail Android client security
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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  • Proton Mail
Proton Mail Bridge is now open source!
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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  • Proton Mail
The Proton Mail Bridge security model
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
  • Product updates
  • Proton Mail
Proton Mail launches Bridge for Linux
Proton Mail Linux users can now connect their email accounts with the Thunderbird client.
Illustration of alternative routing
  • Product updates
Introducing alternative routing to prevent censorship of Proton apps
Proton provides anti-censorship measures to help users bypass DNS blocks. This article explains how these systems work.
Illustration of vulnerability disclosure
  • Product updates
  • Proton Mail
Proton Mail’s responsible vulnerability disclosure policy
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.
  • Product updates
  • Proton Mail
Introducing DKIM key management, a new feature to protect against domain name impersonation
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.
  • Product updates
  • Proton Mail
Russia’s Proton Mail block – New revelations and information
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
  • Product updates
  • Proton Calendar
The Proton Calendar security model
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
  • Product updates
  • Proton Mail
Proton Mail iOS app goes open source!
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
  • Product updates
  • Proton Mail
Proton Mail iOS client security
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.