# Firefox Privacy: 2021 Update

**URL:** https://discuss.privacyguides.net/t/firefox-privacy-2021-update/33786
**Category:** Ghost
**Created:** 2025-12-13T05:55:04Z
**Posts:** 1

## Post 1 by @privacyguides — 2025-12-13T05:55:04Z

Illustration: Jonah Aragon / Privacy Guides | Photo: Unsplash

A lot changed between 2019 and now, not least with regard to Firefox. Since our last post, Mozilla has [improved](https://blog.mozilla.org/en/products/firefox/latest-firefox-rolls-out-enhanced-tracking-protection-2-0-blocking-redirect-trackers-by-default/) privacy with [Enhanced Tracking Protection (ETP)](https://blog.mozilla.org/en/products/firefox/firefox-now-available-with-enhanced-tracking-protection-by-default/). Earlier this year Mozilla introduced [Total Cookie Protection](https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/) (Dynamic First Party Isolation dFPI). This was then further tightened with [Enhanced Cookie Clearing](https://blog.mozilla.org/security/2021/08/10/firefox-91-introduces-enhanced-cookie-clearing/). We’re also looking very forward to [Site Isolation](https://blog.mozilla.org/security/2021/05/18/introducing-site-isolation-in-firefox/) (code named Fission) being enabled by default in the coming releases.

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This is a companion discussion topic for the original entry at [https://www.privacyguides.org/articles/2021/12/01/firefox-privacy-2021-update/](https://www.privacyguides.org/articles/2021/12/01/firefox-privacy-2021-update/)