It’s only speculation with no proof, but it’s an instant urban legend that has launched and will probably remain in the blogosphere until proved incorrect. I’m speaking of reports that North Korean dictator Kim Jong-Un (or some North Korean guys doing his bidding) may have arranged for Chinese hackers to hack into Sony Pictures Entertainment’s web network five days ago and gum things up beyond belief. Nobody knows anything but the possibility is being looked into. The theory is that North Korea may have trojan-ed Sony’s network as payback for The Interview (Columbia, 12.25), the upcoming Seth Rogen-James Franco comedy about a CIA plot to assassinate Kim Jong-Un. North Korean propaganda outlets have threatened “merciless retaliation” against the U.S. and other concerns if the film is released.