Russian hackers successfully gained access to the control rooms of electric utilities and could have caused blackouts in the United States, according to the U.S. Homeland Security Department, The Wall Street Journal reported July 23.

U.S.: Russian Hackers Reached Utility Control Rooms, Homeland Security Department Says

According to the U.S. Homeland Security Department, Russian hackers successfully gained access to the control rooms of electric utilities and could have caused blackouts in the United States, The Wall Street Journal reported July 23.

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U.S.: Russian Hackers Reached Utility Control Rooms, Homeland Security Department Says