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FBI director James Comey has officially put an end to questions over who was responsible for the embarrassing cyber attacks on Sony Pictures, which led to James Franco and Seth Rogen's comedy The Interview being shelved.
Comey said that the attack was clearly from North Korea, as the attacker posted material from servers which are only used by servers in that country and that the hackers "got sloppy".
Pyongyang has denied committing the attack, done under the moniker "Guardians of Peace", but described it as "righteous".
The hackers struck in the run-up to the release of controversial comedy, The Interview, which included a gruesome scene showing Kim Jong-un being killed.
The release of the film was briefly shelved, attracting an avalanche of criticism that the US had bowed to terrorists. It was later put on limited release in cinemas and distributed online.
Sony Cyber Attack: The Worst Affected In Hollywood
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In June 2014, North Korea threatened "merciless" retribution upon the US if the film's release went ahead.
Hackers released embarrassing private emails, including one in which producer Scott Rudin branded Angelina Jolie a "minimally talented spoiled brat".
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