text: 'I think the government acted prematurely in announcing unequivocally that it was North Korea before the investigation was complete,' said Mark Rasch, a former federal cybercrimes prosecutor.
  An investigation by cybersecurity firm Norse has found that it is likely a Sony insider might have helped launch the attack, and that North Korea is not responsible
  The FBI maintains that the Sony hack was carried out by Pyongyang over the release of The Interview, which depicts the assassination of Kim Jong-Un
  'There are many theories about who did it and how they did it. The government has to be pursuing all of them.'
  While U.S. officials investigate whether North Korea enlisted help from outside contractors, the FBI stood by its previous statement that Pyongyang was the prime author of the attack against the Sony Corp unit.
  'The FBI has concluded the Government of North Korea is responsible for the theft and destruction of data on the network of Sony Pictures Entertainment,' the Federal Bureau of Investigation said in a statement to Reuters.