The British-American surveillance program Tempora marks a historic turning point. Unnoticed by the public, intelligence agencies have pursued total surveillance. Governments have deliberately concealed from the public the extent to which we are being watched.The term, “information superhighway” has always been insufficient to describe the Internet. In reality, the Web is a global communication space containing the private information of a large part of the population of every developed country. If someone were able to train an all-seeing eye onto the Internet, the blackmail potential would be almost limitless.It is precisely this all-seeing eye that the British intelligence agency Government Communications Headquarters (GCHQ) and the American National Security Agency (NSA) have developed under the name Tempora. An appropriate real-world metaphor for the program might be something like this: In every room of every house and every apartment, cameras and microphones are installed, every letter is opened and copied, every telephone tapped. Everything that happens is recorded and can be accessed as needed.
http://www.spiegel.de/international/world/public-must-fight-against-prism-and-tempora-surveillance-a-907495.html