The Intercept
Lots of interesting technical details at link....
Although the press release and memo didn’t say what form the support and surveillance would take, it’s likely that the two agencies were being asked to assist police for a particular reason. Both the DEA and the Marshals possess airplanes outfitted with so-called stingrays or dirtboxes: powerful technologies capable of tracking mobile phones or, depending on how they’re configured, collecting data and communications from mobile phones in bulk.
Stingrays have been used on the ground and in the air by law enforcement for years but are highly controversial because they don’t just collect data from targeted phones; they collect data from any phone in the vicinity of a device. That data can be used to identify people — protesters, for example — and track their movements during and after demonstrations, as well as to identify others who associate with them. They also can inject spying software onto specific phones or direct the browser of a phone to a website where malware can be loaded onto it, though it’s not clear if any U.S. law enforcement agencies have used them for this purpose.
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Countermeasure installed at my home.
"If I turn in a sicko, will I get a reward?"