Department of Homeland Security officials on Wednesday told Congress that they won’t get a warrant to use secret cellphone-scanning technology in cases where agents are protecting the president. The officials, appearing before a House subcommittee, said, alongside the extensive security at presidential events, one level of unseen security is the use of cell-site simulators—often called “stingrays” or “dirtboxes”—to look for phones linked to potential criminal suspects.
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ORIGINAL SOURCE: Devlin Barrett, Wall Street Journal
