<ul><li>Modern browsers store favicon data in persistent caches that may not get cleared even in private or incognito mode.</li><li>Some sites pull favicons from third-party domains, potentially exposing users' visits to these sites.</li><li>Favicon caching could be used as a fingerprintable vector in conjunction with other metadata leaks for tracking purposes.</li><li>Community discussion is ongoing on whether to actively block or route favicons to prevent potential privacy risks.</li></ul>

Weird Leak? Favicon Caching Might Be Exposing You

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