north korea has denied any involvement in that cyberattack. it prompted the studio to stop its release of a satirical film about the assassination of kim jong un. all of north korea's internet traffic goes through china, a key pyongyang ally. cnn's will ripley is following this story from our tokyo bureau, and he joins us now live with the very latest. hello, will. >> hey, natalie. the reason why the focus is shifting toward china right now is a simple reality that any hacking attack, even if it was orchestrated by north korea, would be very unlikely to originate from within that country because north korea doesn't have the kind of internet infrastructure that other countries around the world have. north korea deliberately doesn't have the internet readily available because they don't want their citizens inside the country to have access outside. in fact, the average adult when i was in pyongyang just a few months ago had never even heard of the internet, had never heard