More Hacking Attacks Found as Officials Warn of ‘Grave Risk’ to U.S. Government


The Commerce, Treasury and Defense Departments, as well as other federal agencies, were the targets of Russian hackers.

WASHINGTON — Federal officials issued an urgent warning on Thursday that hackers who American intelligence agencies believed were working for the Kremlin used a far wider variety of tools than previously known to penetrate government systems, and said that the cyberoffensive was “a grave risk to the federal government.”

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