# Mozilla says Firefox protections reduce browser fingerprinting precision

_Published Wednesday, November 11, 2026 at 12:10 PM EST · Security · Latest · Tier 2 — Notable_

Mozilla says protections shipped in Firefox, most recently Firefox 145, reduce the precision of browser fingerprinting, which combines device and browser details to recognize people across websites without cookies. Its evaluation found fewer users with unique fingerprints and larger groups sharing the same fingerprint.

Firefox limits screen information that exposes taskbar or dock dimensions and can report processor counts as either 4 or 8. Some protections operate by default in every browsing mode; others require Private Browsing or Strict Enhanced Tracking Protection. Mozilla cautions that trackers can adapt and fingerprinting remains possible.

## Sources

- [blog.mozilla.org](https://blog.mozilla.org/security/2026/11/10/open-research-stronger-privacy-making-firefox-users-harder-to-fingerprint/)

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Canonical: https://techandbusiness.org/newswire/7MXUaN49FNtoMaR7fpSwvv
Published: 2026-11-11T17:10:03.393Z
Story chronology: 2026-11-10T18:36:02.000Z
Retrieved: 2026-11-12T01:00:13.224Z
Publisher: Tech & Business (techandbusiness.org)