The hacking of Sony Pictures has yielded some interesting takeaways. We know a large studio is not safe from digital assault, and we’ve seen more than our fair share of details surrounding stars and their pay. Seeing film budgets is interesting, but we still haven’t been down to brass tacks. What’s this all about? Why hack Sony Pictures? Speculation about the incoming movie The Interview suggested a link to North Korea, who have since refuted that assertion. The hackers, though — their recent demands suggest North Korean ties.