Mozilla conducted one of the largest-ever studies on browser fingerprinting, measuring user uniqueness across nearly 25 million Firefox release users using privacy-preserving technologies like OHTTP. The research identified key fingerprinting vectors and directly informed new anti-fingerprinting protections shipped in Firefox 143, reducing uniquely identifiable users from 75% to 46% without breaking web compatibility.
Background
Browser fingerprinting is a pervasive tracking technique that identifies users based on their device and browser characteristics without cookies. Mozilla has been actively developing anti-fingerprinting measures as part of its Total Cookie Protection and enhanced tracking protection framework.
- Source
- Lobsters
- Published
- Nov 11, 2026 at 03:14 AM
- Score
- 8.0 / 10