Tor Browser 16.0a11 Alpha Release Includes Security Updates

On September 2, 2026, Tor Project released Tor Browser 16.0a11, an alpha version intended for testing. This version includes significant security updates to Firefox, specifically rebasing on version 153.2.0esr and backporting security fixes from Firefox 155. The release is not recommended for general use due to potential bugs affecting usability and security. Users requiring strong anonymity should stick with the stable release channel. The changelog details multiple bug fixes and updates across all platforms, including Windows, macOS, Linux, and Android. The previous version, Tor Browser 15.0.21, was released on September 1, 2026, and also included important security updates. Feedback from users is encouraged to improve future releases.

Key Points: • Tor Browser 16.0a11 released for testing with security updates. • Not suitable for general use due to potential bugs. • Stable release channel recommended for at-risk users.