FYI Alert for all those who are not aware:
1. Sony is a Japanese company with its headquarters in Japan. It owns a Studio in Hollywood which used to be MGM. Sony is a Japanese conglomerate that is not an American company.
2. Seth Rogen, who wrote the story is a Canadian Citizen. The director, his childhood friend a Evan Goldberg, is a Canadian Citizen. They shot the film in Vancouver Canada which is their home territory. They employed Canadians, thus putting many members of the Hollywood community out of work.
"Seth Aaron Rogen (/ˈroʊɡən/; born April 15, 1982) is a Canadian actor, comedian and filmmaker. Rogen began his career performing stand-up comedy during his teenage years, winning the Vancouver Amateur Comedy Contest in 1998." http://en.wikipedia.org/wiki/Seth_Rogen
3. Sony is a conglomerate that has been manufacturing computers for over 30 years. You would think they would have a more secure system regarding hacks. They were asleep at the wheel.
In conclusion I would say a film made by Canadians for a Japanese corporation in Canada, is a Canadian and a Japanese problem.