XKeyscore: NSA tool collects ‘nearly everything a user does on the internet’ | US news | The Guardian

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.

http://www.theguardian.com/world/2013/jul/31/nsa-top-secret-program-online-data

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