作者: Adrian Dabrowski , Nicola Pianta , Thomas Klepp , Martin Mulazzani , Edgar Weippl
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摘要: IMSI Catchers are used in mobile networks to identify and eavesdrop on phones. When, the number of vendors increased prices dropped, device became available much larger audiences. Self-made devices based open source software for about US$ 1,500.In this paper, we describe multiple methods detecting artifacts network produced by such devices. We present two independent novel implementations an Catcher (ICC) detect threat against everyone's privacy. The first one employs a stationary (sICC) measurement units installed geographical area constantly scanning all frequency bands cell announcements fingerprinting parameters. These rooftop-mounted can cover large areas. second implementation is app standard consumer grade phones (mICC), without need root or jailbreak them. Its core principle upon topology correlation, facilitating ubiquitous built-in GPS receiver today's capabilities technique. latter works vicinity phone learning landscape than matching it learned data. implemented evaluated both solutions digital self-defense deployed several long term field-test. Finally, how recently published denial service attacks.