Tuesday, February 23, 2016

U.S.. Marshals secretly tracked 6,000 cellphones

The U.S. Marshals Service used a cellphone tracking device commonly known as a stingray nearly 6,000 times, newly disclosed records show.
(Photo: Eileen Blass,

agency had made on its log of stingray uses. The agency described the log in a letter as “a listing of IMSI catcher use,” using another name for the technology that intercepts cellphone signals.

Stingrays are suitcase-sized devices that can pinpoint a cellphone’s location within a few yards by posing as a cell tower. In the process, they also intercept information about other cellphones that happen to be nearby, a fact that has raised concerns among privacy advocates and some lawmakers. Dozens of police departments use the devices, often concealing that fact from suspects and their lawyers.

The Marshals Service’s surveillance log lists 5,975 cases in which the Marshals Service used stingrays. The agency declined to say what time period the log covered, or where the suspects were arrested. It also declined to identify the suspects, to protect their privacy.

“Just that sheer number is significant,” American Civil Liberties Union lawyer Nathan Wessler said. “That’s a lot of deployments of a very invasive surveillance tool."

No other law enforcement agency is known to have used stingrays so often. The New York Police Department told the ACLU last month that it used the cell-tracking devices about 1,000 times since 2008; the Florida Department of Law Enforcement said it had used one about 1,800 times to conduct investigations throughout the state. Until now, Baltimore’s police force had been the most prolific known user; a detective there testified that city police had used their tracker 4,300 times.

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