evidence exists at this point the malware used within, that was associated with the sony attack was calling back to an ip address in north korea. now the problem with this evidence is that, the malware wasn't unique to the sony job. the malware was actually recycled and purchased somewhere else. so it is very possible this call back to a north korean ip address was something already in the script. i mean we really have no way of knowing. bill: just to be clear on this and "wall street journal" is reporting that, a single link was traced back to north korea. how many links could there be in something like this? >> right. i mean, it's impossible to say. there could be a number of sort of call home signals. but i mean the point is, for something like this there is really no reason for a piece of malware to call home. i mean intent is to steal and distribute. the pieces don't, they just don't add up. i mean so to look at really, to sort of grind into where this