Overview

• Proton Authenticator is available on iOS, Android, Windows, macOS, and Linux as a free two-factor authentication tool.
• The open-source app encrypts user codes end-to-end and operates without ads or tracking.
• Users can generate codes offline, import tokens from other authenticators, and sync across devices with automatic encrypted backups.
• App-based 2FA offers stronger protection than SMS-based methods that are vulnerable to SIM-swapping.
• The launch follows Proton’s rollout of its privacy-focused AI chatbot Lumo and reflects the company’s growing suite of encrypted services.