IMSI catcher

IMSI catcher

A cellular wiretapping device that simulates a cell tower. Pronounced "im-zee catcher," it logs the phone's International Mobile Subscriber Identity number (IMSI) and functions like a man-in-the-middle attack, relaying voice, text and data traffic between the real cell tower and the target device. See IMSI.
References in periodicals archive ?
Authorities have tools that can pick up hints that an IMSI catcher is nearby, but they aren't very effective, witnesses said Wednesday.
government but said in a statement, "ESD America has several corporate and foreign government clients whom we have assisted in the detection of potential IMSI Catcher operation across many cities including Washington, D.C."
IMSI catcher secrecy is a fairytale, while the long-term impact of the technology may lead to a privacy and security nightmare.
An IMSI catcher (International Mobile Subscriber Identity) is a telephony eavesdropping device for monitoring mobile phone traffic and movement of mobile phone users.
Leigh Day pointed out that the export of IMSI catchers to the Philippinescame after its president, Rodrigo Duterte, admitted the state had wiretapped at least two politicians, one of whom was subsequently killed, along with 14 other people, in a raid on his home.
These switches could also be used to bar the device from connecting to IMSI catchers.