How the FBI uses the Patriot Act to get info on Google users

InfoWorld: In 2012, Google may have received 500 National Security Letters, requests from the FBI for identifying data -- such as name or address -- about one or more Google users. The number of NSLs may have actually been 200, though. Or possibly 950. Or perhaps (but almost certainly not) zero. In fact, all we know is that Google received between zero and 999 NSLs in 2009, as well as 2010, 2011, and 2012. That's not a lot of useful data, but it's more than we knew even one day ago.

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