New Technologies Give Government Ample Means to Track Suspects, Study Finds

The F.B.I. director, James B. Comey, and other Justice Department officials have said moves by technology firms to encrypt data have choked off critical ways to monitor suspects. Kevin hagen for The New York Times

WASHINGTON — For more than two years the F.B.I. and intelligence agencies have warned that encrypted communications are creating a “going dark” crisis that will keep them from tracking terrorists and kidnappers.