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Internet privacy service Tor warns users it was attacked

Published on Jul 31, 2014 7:20 AM

BOSTON (REUTERS) - Tor, the prominent system for protecting Internet privacy, said on Wednesday many of its users trying to reach hidden sites might have been identified by government-funded researchers.

In a note on the nonprofit's website, Tor Project leader Roger Dingledine said the service had identified computers on its network that had been quietly altering Tor traffic for five months in an attempt to unmask users connecting to what are known as "hidden services".

Dingledine said it was "likely" the attacking computers, which were removed on July 4, were operated on behalf of two researchers at the Software Engineering Institute, which is housed at Carnegie-Mellon University, but funded mainly by the US Department of Defence.

The pair had been scheduled to speak on identifying Tor users at the Black Hat security conference next month.

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