Starting today, every app you use to access your Proton Mail inbox is open source and has passed an independent security audit.
One of our guiding principles is transparency. You deserve to know who we are(neues Fenster), how our products can and cannot protect you(neues Fenster), and how we keep your data private(neues Fenster). We believe this level of transparency is the only way to earn the trust of our community.
To that end, open source has long been a priority at Proton. Our web app has been open source (neues Fenster)since 2015, our iOS app is open source(neues Fenster), our desktop Bridge app is open source(neues Fenster), and all Proton VPN apps are open source(neues Fenster).
This means that all Proton apps that are out of beta are open source.
Today we add the Proton Mail Android app to this list. The code is available on our GitHub page(neues Fenster).
As part of making our Android app open source, we commissioned an independent security audit from SEC Consult(neues Fenster). Their audit found that our app has no outstanding vulnerabilities. We have also published the full audit report(neues Fenster) on our website.
Open source at Proton
Your safety is our number one priority. Open sourcing our code increases the security of our apps because it allows us to leverage the entire IT security community to search for vulnerabilities. Those who discover vulnerabilities may be eligible for our bug bounty program(neues Fenster).
This means that the activists(neues Fenster) and journalists who rely on our service can be confident their communications will remain private.
Open source code contributes to a free Internet
Our goal is to bring security, privacy, and freedom to the Internet. That is why we are strong supporters of the open source community. We maintain two open source cryptographic libraries, OpenPGPjs(neues Fenster) and GopenPGP(neues Fenster), to make it easier for developers to encrypt their apps and thus protect more data.
This cooperation among open source developers is how we create and sustain the privacy tech ecosystem that is necessary to create a safer Internet. Thank you to our community for supporting these efforts, and we look forward to your feedback on GitHub or directly via email at contact@proton.me.
You can get a free secure email account from Proton Mail here.
We also provide a free VPN service(neues Fenster) to protect your privacy.
Proton Mail and Proton VPN are funded by community contributions. If you would like to support our development efforts, you can upgrade to a paid plan(neues Fenster). Thank you for your support.
Feel free to share your feedback and questions with us via our official social media channels on Twitter(neues Fenster) and Reddit(neues Fenster).
