Experts Still Unsure On North Korea’s Involvement In Sony Pictures Hack

North Korea’s involvement in the Sony Pictures attack is still up for debate, even if U.S. officials have already revealed North Korea to be the prime attacker candidate.
Security experts still do not see a strong connection between North Korea and the hacking group #GOP. In an interview with The Guardian, Caroline Baylon—a research associate in cyber security at Chatham House—claims North Korea is probably not behind the attack.
Baylon debunks most of the “evidence” connecting North Korea to the Sony Pictures hack.
The attack code used in the hack looks similar to South Korean hacks last year—which North Korea is blamed for—but as Baylon mentions attack code is bought and sold regularly.
The implementation of the attack code used on Sony Pictures has to come from an advanced organisation or a state-sponsored group. China, Russia and Iran have all shown the capability to use this attack code, but North Korea has not used it.

#GOP has uploaded the files en masse, damaging Sony Pictures reputation and exposing various secrets. It is not normal for a state-sponsored group to do this, and makes it even more likely ex-employees wanted to get back at Sony.
Considering in the first leak, the #GOP claimed to have worked with an internal ally to hack the system, it further removes North Korea from the conversation. It is highly unlikely North Korea and a Sony Pictures employee would be able to contact one another.
Still, North Korea is not known for its diligence when it comes to hacking and tends to be more forthright than other countries. If the #GOP shows anything, its that those behind the attack want to see complete change at Sony Pictures.
The Interview will be made available, after a week of protest over Sony Pictures and cinema owners dropping the movie.