XKeyscore: NSA tool collects ‘nearly everything a user does on the internet’ –XKeyscore gives ‘widest-reaching’ collection of online data –NSA analysts require no prior authorization for searches –Sweeps up emails, social media activity and browsing history 31 Jul 2013 A top secret National Security Agency program allows analysts to search with no prior authorization through vast databases containing emails, online chats and the browsing histories of millions of individuals, according to documents provided by whistleblower Edward Snowden. The NSA boasts in training materials that the program, called XKeyscore, is its “widest-reaching” system for developing intelligence from the internet. The latest revelations will add to the intense public and congressional debate around the extent of NSA surveillance programs. They come as senior intelligence officials testify to the Senate judiciary committee on Wednesday, releasing classified documents in response to the Guardian’s earlier stories on bulk collection of phone records and Fisa surveillance court oversight.