U.S. President Barack Obama has authorized new economic sanctions against North Korea, in part for the country’s alleged hack of Sony Pictures Entertainment in November, the White House said.

Even though some security researchers have questioned whether North Korea was behind the Sony hack, the White House and the U.S. Department of the Treasury on Friday announced sanctions against 10 North Koreans and three organizations in the country.

The FBI blamed the government of North Korea for the attack in mid-December. The government of North Korea has denied involvement in the attack, although it praised hackers for attempting to prevent the release of “The Interview,” a movie about a plot to kill North Korean leader Kim Jong Un.

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