The head of the Internal Revenue Service told a Senate committee on Tuesday that its stingrays are "only used in criminal investigations."
The remarks came just one day after The Guardian revealed that the IRS had purchased the devices in 2009 and 2012.
Stingrays, also known as cell-site simulators, can be used to determine a phone’s location by spoofing a cell tower, and in some cases they can intercept calls and text messages. Once deployed, the devices intercept data from a target phone as well as information from other phones within the vicinity.
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