Working under the code name Sabu, Hector Monsegur was responsible for some of the most notorious hacks ever committed. As he told "CBS This Morning" co-host Charlie Rose earlier this month, Monsegur began cooperating with the FBI after getting caught. He now works as a security researcher.

"For something like this to happen, it had to happen over a long period of time. You cannot just exfiltrate one terabyte or 100 terabytes of data in a matter of weeks," Monsegur said. "It's not possible. It would have taken months, maybe even years, to exfiltrate something like 100 terabytes of data without anyone noticing."
Monsegur said there's also a chance the hack could have originated from China.

"I mean, it's possible," he said. "It might be a North Korean inside China."

Some of the investigators point to malware written in Korean, but Monsegur said that doesn't necessarily mean the hackers are Korean.

"Well, it doesn't tell me much. I've seen Russian hackers pretending to be Indian. I've seen Ukrainian hackers pretending to be Peruvian.There's hackers that pretend they're little girls. They do this for misinformation, disinformation, covering their tracks," he said. "Do you really think a bunch of nerds from North Korea are going to fly to New York and start blowing up movie theaters? No. It's not realistic. It's not about 'The interview.' It's about money. It's a professional job."

Monsegur thinks it's also possible this was an inside job, that an employee or consultant downloaded all the information from Sony's servers and then sold it to someone else.
http://www.cbsnews.com/news/sony-hac...s-responsible/

Shave with Occam's Razor