Home Depot, P.F. Chang's and Sally Beauty all suffered major blows. Not even the United States Postal Service was safe. 800,000 federal employees were affected by a breach that involved the theft of social security numbers, employment data and other sensitive information. And what's a look back at major hacks this year without mention of the celebrity photo leak? Hundreds of celebrity photos were obtained from Apple's online storage system, iCloud, when thieves targeted celebrity accounts, extracting backup files filled with photos. The breach put a human face on cybersecurity, spurring Apple to tighten its iCloud security and ramp up two-factor authentication. (Video via Macworld ) And that probably would have been the biggest catastrophe to come out of the entertainment industry this year, if not for the Sony Pictures breach. "You want us to kill the leader of North Korea," Seth Rogen asks in Sony Pictures' "The Interview."