All of the mysterious cell phone towers in the U.S. can now be pinpointed.
But most of them are not the U.S. government’s.
That’s the word from Les Goldsmith, the CEO of ESD America. His company, which made public last year the existence of the interceptors, is today announcing the launch of its real-time Overwatch service for finding the towers.
The company said this is the only known system capable of systematically locating the interceptors.
The towers are called IMSI catchers, for the International Mobile Subscriber Identity that is attached to every cell phone. They mimic legitimate cell towers and reroute nearby cell transmissions through them. But they’re not phone company equipment. ESD said it discovered the IMSI catchers in the course of testing the company’s military-grade secure Cryptophone 500 cell phone.