It is even more than that, the FBI PR quote that this is based on is the following: "For example, the FBI discovered that several Internet protocol (IP) addres

It is even more than that, the FBI PR quote that this is based on is the following: "For example, the FBI discovered that several Internet protocol (IP) addresses associated with known North Korean infrastructure communicated with IP addresses that were hardcoded into the data deletion malware used in this attack." Firstly, this isn't a statement of evidence, it is an generalized example of the type of evidence the FBI apparently has. Given the lack of any further clarifications on this statement, I don't see how you can make and presumptions as to what the actual evidence is. there just is not enough data here. Secondly, the statement is carefully worded to say that the C&C IP's have communicated with known NK infrastructure. This is massively different than saying that the C&C IP's are associated with NK infrastructure. What the FBI is saying is that they have been able to apparently collect evidence that shows NK was communicating with the C&C IP's, presumably while the attacks were going on. With what we know about the state of internet surveillance, is it really that unrealistic to think that US SIGINT is collecting every single packet that transits known KN networks? Seems right in their wheelhouse. Point is, the FBI aint telling us squat about what evidence they may or may not really have. Maybe this is because they are making the whole thing up, or maybe it is because they just don't want to tell us how much evidence they got, and how they got it.