W3C Calls for Immediate Deprecation of Third-Party Cookies

2025-05-02

The World Wide Web Consortium's Technical Architecture Group (TAG) has issued a statement urging all browsers to immediately drop support for third-party cookies. These cookies pose a significant threat to user privacy, enabling widespread cross-site tracking. While removing them impacts some existing functionalities (like single sign-on and ad targeting), the TAG argues that developing privacy-preserving alternatives is paramount. They stress that any replacements must undergo rigorous scrutiny to ensure they don't recreate the same problems and call for browsers to establish clear timelines for the complete removal of third-party cookies.

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