FBI formally accused North Korea of attacking Sony Pictures on Friday. FBI cites three levels of evidence that has led to this conclusion. But experts say they are not buying the FBI’s conclusions. Sony Pictures forced to cancel the movie The Interview, meeting one of the demands made by the attackers, after the attackers made thinly veiled threats of physical attacks, Sony said to have caved to the attackers’ demands, removing the official website and the trailer for the upcoming film The Interview from the Sony hack.”]