Via the Guardian, the curtain keeps pulling back to reveal ever-greater levels of total surveillance:
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The National Security Agency boasts in training materials that a program called XKeyscore is its “widest-reaching” system for developing intelligence from the internet.
The top secret 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 files shed light on one of Snowden’s most controversial statements, made in his first video interview with the Guardian on June 10: “I, sitting at my desk,” said Snowden, could “wiretap anyone, from you or your accountant, to a federal judge or even the president, if I had a personal email”.
Training materials for XKeyscore detail how analysts can use it and other systems to mine enormous agency databases by filling in a simple on-screen form giving only a broad justification for the search.