Phones and Apps : DefCon fun: Hacker Spoofs Cell Phone Tower to Intercept Calls

Gorilla

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Jan 31, 2009
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LAS VEGAS — A security researcher created a cell phone base station that tricks cell phones into routing their outbound calls through his device, allowing someone to intercept even encrypted calls in the clear.

The device tricks the phones into disabling encryption and records call details and content before they’re routed on their proper way through voice-over-IP.

The low-cost, home-brewed device, developed by researcher Chris Paget, mimics more expensive devices already used by intelligence and law enforcement agencies – called IMSI catchers – that can capture phone ID data and content. The devices essentially spoof a legitimate GSM tower and entice cell phones to send them data by emitting a signal that’s stronger than legitimate towers in the area.

Full Article: http://www.wired.com/threatlevel/2010/07/intercepting-cell-phone-calls/
 

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