{"page":"/blog/identity-after-privacy-sandbox","modified":"2026-10-18","license":"https://creativecommons.org/licenses/by/4.0/","columns":["Browser","Third-party cookies","Since","Share (worldwide, September 2026)","Identity consequence"],"rows":[["Chrome","Allowed by default in regular browsing; blocked in Incognito; user can block in settings","22 April 2025 decision (Privacy Sandbox blog)","66.36% (StatCounter)","Cookie-based IDs still work for most Chrome users; no browser API alternative"],["Safari","Blocked by default (ITP)","24 March 2020 (WebKit)","18.27%","Addressable only via first-party login, consented ID or context"],["Edge","Chromium default; allows third-party cookies with tracking-prevention settings","n/a","6.04%","Same as Chrome"],["Firefox","Partitioned by default (Total Cookie Protection)","14 June 2022 (Mozilla)","2.8%","Cross-site cookie IDs do not work"],["iOS apps","Advertising identifier (IDFA) requires App Tracking Transparency permission","iOS 14.5 (Apple developer)","n/a","Opt-in rate decides addressability"],["Android apps","Advertising ID available; Android Privacy Sandbox APIs scheduled for phase-out","17 October 2025 (Privacy Sandbox blog)","n/a","GAID remains the app identifier"]],"sourceUrls":[["https://privacysandbox.google.com/blog/privacy-sandbox-next-steps","https://gs.statcounter.com/browser-market-share"],["https://webkit.org/blog/10218/full-third-party-cookie-blocking-and-more/"],[],["https://blog.mozilla.org/en/mozilla/firefox-rolls-out-total-cookie-protection-by-default-to-all-users/"],["https://developer.apple.com/app-store/user-privacy-and-data-use/"],["https://privacysandbox.google.com/blog/update-on-plans-for-privacy-sandbox-technologies"]]}