The only area worth paying attention to is government hacking. I'm sure they would take grrreat pleasure cleaning out American companies. So far it seems to South Koreans and the Japanese who are the stupidest and leave themselves wide open.
I would love to know how they manage to launder the funds they spirit away.
Yes, North Korea has been targeting Japan and South Korea and to a certain extend American exchanges too. They probably work with other criminals like in this report
Chinese nationals helped North Korea launder stolen cryptocurrency, US officials say. Or maybe those just submit fake KYC's that they have stolen and used it to open up an exchange account and then cash it out.