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For everyone who thinks Tor is a silver bullet


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Saw an article on the SANS ISC this morning concerning this recently released advisory/paper by Packet Storm:


In summary, the author proves that it is trivial to uniquely identify end nodes in a Tor network by using embedded content to contact a third-party server outside the Tor network. This could be theoretically performed on any Tor exit node.

The article suggests a) disabling embedded content while using Tor for web browsing, and b) using SSL (duh). However, I would recommend people go a few steps further and kill all local routes except the one pointing to your Tor gateway (same concept typically used by VPN clients). This would absolutely prevent any traffic leakage.

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