The owner of one of the TOR directory servers himself confirmed he had seen the source code of XKeyscore and saw his server's IP hardcoded in there. The server is located in Nürnberg, Germany, and is called Gabelmoo. Id est: XKeyscore logged every attempt to access his server. Additionally, comments made in the source code show that everyone who is accessing the directory server is made an "extremist" - at least in the terminology of the NSA. In the source code the student hasn't seen any proof that TOR relay servers are exposed to the same risk. This task might be allotted to another application... Source#1 Source#2 excellent addition by sheivoko - the XKeyscore rules!