Proton has launched a brand-new two-factor authentication app, and it’s honestly one of the most exciting tools I’ve seen in a while. Called Proton Authenticator, this cross-platform app is designed to give users full control over their 2FA codes without the usual trade-offs like ads, trackers, or vendor lock-in.

These days, just having a strong password isn’t enough. Hackers and data leaks are everywhere, and enabling 2FA is one of the easiest ways to protect your online accounts. While SMS-based 2FA is still common, it’s risky. SIM-swapping attacks can render it useless. A proper authenticator app is far more secure because the codes are generated locally and constantly refresh.

What makes Proton Authenticator stand out is that it’s not just another app slapped together with a pretty UI. It’s free, open source, and works across all major platforms… iOS, Android, macOS, Windows, and yes, Linux too. As someone who uses multiple operating systems, I absolutely love the cross-platform support. And the fact that it doesn’t cost a dime is a huge win for privacy-minded folks who are sick of being tracked or charged just to protect their data.