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What Is the Big Secret Surrounding Stingray Surveillance?

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Cell phone tower

Stung: Law enforcement agencies sometimes use a device called a stingray to simulate a cell phone tower, enabling them to gather international mobile subscriber identity (IMSI), location and other data from mobile phones connecting to them. Pictured here is an actual cell tower in Palatine, Ill.

Credit: Joe Ravi (CC-BY-SA 3.0), via Wikimedia Commons

Given the amount of mobile phone traffic that cell phone towers transmit, it is no wonder law enforcement agencies target these devices as a rich source of data to aid their investigations.

From Scientific American
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