Why the Sony hack is unlikely to be the work of North Korea.:
Everyone seems to be eager to pin the blame for the Sony hack on North Korea. However, I think it's unlikely. Here's why: Ref. Source 4
But if the threat was against the cinemas that were going to show it what about the actors, directors, producers, etc.? That one take that this was all a ploy by Sony to market the movie is hilarious! I don't think the comapny would expose itself like that for just one movie.
North Korea issued a statement on its official state news agency on Saturday denouncing Sony Pictures Entertainment's release of the movie "The Interview."
It called President Barack Obama the "Chief culprit" Who forced the production company to "Indiscriminately distribute" The picture. Ref. CNN