Proton security response center

We are the Proton Security team, responsible for working with security researchers to protect our apps and your data. Your security is our top priority.

Bug bounty program

Security researchers are integral to finding bugs that were missed in our development process. If you find a qualifying bug, we will acknowledge your contribution and give you a bounty award.

Vulnerability disclosure policy

Read Proton’s vulnerability disclosure policy that explains what we do when we find flaws in third-party products and services.

Report a bug

If you’ve found a bug, report it to us directly. This helps us make our apps better and more secure.

Neuigkeiten von Proton

Learn more about Proton’s services, latest updates, security audits, and engineering work.

Threat and security models

Proton services are designed to guard against a broad range of threats, though no app can guarantee your security. Our threat models describe the threats Proton services can and cannot counter, and our security models offer an in-depth, technical explanation of how our services’ encryption works...