Firefox Tor reveals flaw: stable identifier compromises anonymity
A Fingerprint study reveals that a stable identifier in Firefox could link all of a user's private identities on the Tor network, nullifying the sought-for anonymity protection.
This persistent identifier, built into the browser, creates hidden traceability even when using Tor, defeating protections designed to preserve anonymity.
This discovery prompts Mozilla to fix this major vulnerability to restore trust among privacy-conscious users.