The initial demand asked for money reward. It could easily be some organized crime hackers that wanted money, and then blamed it on North Korea to throw off eve

The initial demand asked for money reward. It could easily be some organized crime hackers that wanted money, and then blamed it on North Korea to throw off everyone's scent. On the Internet nobody knows you're North Korea (if you're sophisticated enough). Also, their main evidence seems to be that "they used the same hacking software as North Korea had used before - and can be found on the black market". So this is a little like some hackers buying forensics tools that can hack iPhones, the same ones the police are buying, and then saying the police hacked the celebrity nudes a few months ago.