Original post by FDRThey talk a big game, but they have never carried out their threats; countless times in the past they have issued warnings (i.e because of US/South Korea training excercises etc) and never carried out the threats.
That's even assuming NK is behind the hack, which I don't think it is - at least not wholly - for a start, Sony's systems were supposedly pretty weak and easy to hack - remember a few years ago, before 'the interview' was even a thought, their PS3 online systems were hacked, so there is a chance it was the same, or similar, groups. Secondly, NK usually issues such warnings officially, why would they do it anonymously - given how succesful the hack has been, surely taking full responsibility for it would confer on them a degree of international prestige.
I think, given that the hack started in November and the interview wasn't even mentioned, the original hackers had nothing to do with NK, they probably just wanted to cause a bit of havoc. Then we get this 'warning' which could easily be the hackers trying to cause more havoc by blaming NK and seeing if they can get some reaction out of Washington, or perhaps it was a group of (probably less sophisticated) NK hackers trying to piggyback on the hack by posting the warning.