“A legal fight over the government’s use of a secret surveillance tool has provided new insight into how the controversial tool works and the extent to which Verizon Wireless aided federal agents in using it to track a suspect.  Verizon reprogrammed his aircard so that when an incoming voice call arrived, the card would disconnect from any legitimate cell tower to which it was already connected, and send real-time cell-site location data to Verizon, which forwarded the data to the FBI. This allowed the FBI to position its stingray in the neighborhood where Rigmaiden resided. The stingray then ‘broadcast a very strong signal’ to force the air card into connecting to it.”

http://www.wired.com/threatlevel/2013/04/verizon-rigmaiden-aircard/

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