A source at a telecom security firm contracting with the Department of Homeland Security has confirmed to CBS a report that it detected an unusual amount of suspicious cell tower activity affecting phones serviced by a "major" cell carrier in the vicinity of the White House and the U.S. Capitol.
DHS has not commented on the suspicious activity, but the source at ESD America, the security contractor, said the activity was first observed in January. It could indicate surveillance, possibly controlled by a foreign entity and potentially targeting specific lawmakers or officials given the geographic range.
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