It truly is difficult to attribute and only with more evidence and a more careful analysis of timeline, the malware, and the communications will things come into focus.
One thing I have not yet been able to find are numbers for the ransom. I've seen the emails demanding ransom and the defacings demanding the same, but nowhere have I seen a number of dollars being demanded. Have you seen that anywhere?
You can try to fight the total annihilation of meaning in our language, but as you see here it is a losing battle.
terrorism
socialism
marxism
hero
capitalism
free market
invisible hand
imminent
torture
collect
to brief
espionage
surveillance
privacy
freedom
search
Re: computer hacking considered "terrorism" - this represents yet another way "terrorism" no longer means the despicable act it was originally associated with. And doesn't that make the "War on Terror" also a "War on Hacking"? How the hell are we going to win a war on hacking?
I do hope that the OP was not using the GW Bush administration definition of terrorism...
Everybody seems to have forgotten that this started as a financial ransom demand and the attackers made no mention of the movie or the DPRK until Sony and the media did.
I'm not suggesting the DPRK are not involved, but that it is a very big leap to go from media speculating about motives to the US government formally accusing them. The details leaked to the NyTimes do not substantiate this leap.