Before his vacation began in mid-December Obama said North Korea was responsible for the attack and the United States was preparing a response . The U.S. imposed new sanctions against North Korea . The sanctions come after a cyberattack against Sony , according to North Korea . American officials who represent North Korea 's free - trade are targeted in the sanctions .
The U.S. imposed new sanctions against North Korea . The sanctions come after a cyberattack against Sony , according to North Korea . American officials who represent North Korea 's free - trade are targeted in the sanctions .