what would china's involvement be will? >> reporter: john we know china certainly has been an internet supporter of north korea in the sense they have much more massive infrastructure here than they do in pyongyang. north korea still relies on chinese servers to connect to the internet. u.s. law enforcement says as orchestrating this attack they believe north korea is the only nation involved. as far as the technical reliance. >> and what are they saying about president obama and what about the sony hacking? >> reporter: well you know north korea was so indignant about the portrayal of their leader in the film. some would argue they would have every right to be offended and angry over a film showing kim jong-un's head exploding and