Yahoo Chief Information Security Officer Bob Lord on encryption: "Yes, it's used by terrorists. It's also used by people who are looking to voice their opinions on issues and to save lives."
FBI Director James Comey testifies March 1 before the House Judiciary Committee on the encryption of the iPhone belonging to one of the San Bernardino attackers.
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FBI Executive Assistant Director for Science and Technology Amy Hess (from left) testifies on encryption Tuesday before a House panel, alongside the New York City Police Department's Thomas Galati and Indiana State Police Office Capt. Charles Cohen.
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The official FBI seal is seen on an iPhone camera screen outside the agency's headquarters. With help from a third party, the FBI managed to unlock the iPhone used by one of San Bernardino shooters.
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Prosecutor Cody Hiland speaks at a news conference in Conway, Ark., on Aug. 7, after two teenagers were charged in the murders of Robert and Patricia Cogdell. On Wednesday, the FBI agreed to help the Faulkner County prosecutor get access to an iPhone and iPod that belonged to the suspects.