October 4, 2013

NSA Tried and Failed to Compromise Tor, But Browser Vulnerabilities Gave Some Users Away

Intelligence agencies have devoted significant time to cracking the Tor encryption network, reports The Guardian, but it's largely failed to compromise the system. According to leaked documents obtained by Glenn Greenwald, the NSA and Britain's GCHQ were frustrated by Tor, at one point in 2012 putting out a presentation called "Tor Stinks." "We will never be able to de-anonymize all Tor users all the time," it says. "With manual analysis we can de-anonymize a very small fraction of Tor users." While it's known that the NSA was actively working to weaken cryptography, these documents suggest that it was, at least in the case of Tor's network itself, unsuccessful.

However, the documents also describe other methods that could effectively...

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