PrivacyTests.org—Open Source Tests of Web Browser Privacy
summary
PrivacyTests.org runs weekly automated leak tests by launching browsers on a Mac, visiting test pages that simulate trackers, collecting results and publishing comparative pages. Tests show state partitioning implemented by Firefox, Safari and Brave but not Chrome-based browsers, Brave upgrades or blocks HTTPS aggressively while LibreWolf/Mull/Tor show blocking pages, and a WHO-TRACKS.ME top‑20 tracker test where Brave, LibreWolf and Mull block all top trackers while Chrome, Opera, Vivaldi and Edge still allow tracking cookies. Results are public and reproducible.
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chapters (8)
- 0:00PrivacyTests.org intro
- 1:58Browsers and mass surveillance
- 3:46Open-source privacy testing design
- 5:52State partitioning and tracking
- 7:19HTTPS adoption and encryption
- 7:40Blocking trackers and cookies
- 8:46Future of browser privacy tests
- 9:50Lessons and community impact
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