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But other witnesses cautioned that any such move could stifle innovation, place U.S. technology companies at a competitive disadvantage and unintentionally create systems vulnerable to hackers, criminals and terrorists.
At issue is the diminished capability of law enforcement agencies to conduct quick wiretaps in an age of Twitter accounts, Facebook and MySpace pages, BlackBerrys, Androids, iPhones and iPads. The Justice Department calls the phenomenon "going dark." (more)