Mozilla tests "Firefox IP Protection" to promote Mozilla VPN in Firefox, with UI prompts that ask users to upgrade to secure their devices.

Firefox is a secure web browser, and that's partly due to its Enhanced Tracking Protection feature. It blocks trackers and harmful scripts, including cookies and hidden ads.

The biggest new feature in Firefox 133 is privacy protection. The new anti-tracking function, called Bounce Tracking Protection, recognizes bounce trackers by their redirection behavior.