IMSI

Wireless Carriers Can Now Catch Police Spying on their Networks

Researchers at SBA Research in Vienna have teamed up with T-Mobile Austria, a fully-owned subsidiary of Deutsche Telekom, to study whether the use of electronic surveillance devices known as IMSI catchers, commonly used by police and government agencies around the world to spy on cellular networks, can be detected. Turns out it's actually possible to tell when police use this...