As impressive as their claims, and some evidence of their abilities may be, it's still utterly stupid to cave in to them like this. South Korea learned a hard lesson about internet to intranet isolation - still vulnerable to insider jobs, natch, but it's much better now. It's quite a bit harder to perform insider sabotage off of the Korean Peninsula. But, fluffing out our petticoats in fear of Bureau 121, the name of which Alex Jones might have coined, is exactly what they want. Fait accompli.
Okay, then using an abundance of caution, say The Interview goes straight to DVD with widest possible distribution among countless vendors. Now, PDRK has so many freaking targets to cyber attack the gesture becomes burdensome. Besides, hit enough corporations in the wallet hard enough...suddenly there's support for wiping them out militarily. And if instead they focus on hitting a single, or a couple, of valuable targets - again, perfect impetus to declare war. Which is so predictably shameful, in light of how long the civilized world has let PDRK get away with being a human rights nightmare for it's people.