According to the German website Heise Online, a look at source code for XKeyscore reveals that users of the anonymous TOR network "automatically end up in the databases of the NSA" and are flagged as "extremists." More here.
With this revelation is clearer how the NSA is trying to expose users of the Tor network. In October 2013, the Guardian had revealed that U.S. intelligence admits at least internally, not to be very successful. That had with "gate stinks" the agents summarized succinctly.
[...] According to the source code will be labeled as extremists in XKeyscore users when they search the internet for anonymizing tools like Tor or Tails, thanks to the global monitoring of search queries. It is these tools are however popular with many groups that rely on anonymity, so as well as lawyers, human rights activists and journalists around the world. The will, therefore, quite specifically by the NSA spying, about the contents of their e-mails.
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