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Sead Fadilpašić

YOU WONT BELIEVE: This firefox vulnerability may have been tracking all your private tor identities even in private mode - You Need To See This

Tor Mozilla
A graphical rendering of the Mozilla Firefox icon.
  • Researchers uncovered a flaw in Firefox and Tor Browser that allowed websites to generate hidden, stable identifiers without cookies.
  • The issue stemmed from IndexedDB behavior, enabling persistent fingerprinting even in private browsing or Tor’s “New Identity” mode.
  • Mozilla and Tor quickly patched the vulnerability, with fixes included in Firefox 150 and Tor Browser 15.0.10.

Browsers like Mozilla Firefox and Tor Browser contained a vulnerability where websites could create a hidden ID from browser sessions without using cookies or otherwise obvious tracking methods.

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