POLITICS

NSA Tapped Into North Korean Networks Before Sony Attack, Officials Say

FILE - In this July 27, 2013 file photo, North Korea's leader Kim Jong Un waves to spectators and participants of a mass mili
FILE - In this July 27, 2013 file photo, North Korea's leader Kim Jong Un waves to spectators and participants of a mass military parade celebrating the 60th anniversary of the Korean War armistice in Pyongyang, North Korea. If the U.S. government’s claim that North Korea was involved in the unprecedented hack attack on Sony Pictures that scuttled Seth Rogen’s latest comedy is correct, no one can say they weren’t warned. The movie, “The Interview,” pushed all of North Korea’s buttons. (AP Photo/Wong Maye-E, File)

WASHINGTON — The trail that led American officials to blame North Korea for the destructive cyberattack on Sony Pictures Entertainment in November winds back to 2010, when the National Security Agency scrambled to break into the computer systems of a country considered one of the most impenetrable targets on earth.

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