United, NYSE technical troubles not caused by 'nefarious' actor: U.S. Homeland Security chief

U.S. Homeland Security Secretary Jeh Johnson said technical problems reported on Wednesday by United Airlines and the New York Stock Exchange were apparently not related to "nefarious" activity. "I have spoken to the CEO of United, Jeff Smisek, myself. It appears from what we know at this stage that the malfunctions at United and the stock exchange were not the result of any nefarious actor," Johnson said during a speech at the Center for Strategic and International Studies, a Washington think tank.

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