They didn't steal the what. They stole the how. There's a big difference. Edit: NK has long been worried about a decapitation attack. Now, if you're going to d

They didn't steal the what. They stole the how. There's a big difference. Edit: NK has long been worried about a decapitation attack. Now, if you're going to defend against an attack that you know is coming, it can be crucial to know how your enemy is going to attack. In this case, from NK's POV: What US national technical means will be used to locate the Dear Leader, and in turn, which of our precious few countermeasures will be most profitably deployed against them? What army unit leaders does the West suspect might be turned? Let's get ready to replace them. What local, Western-controlled individuals will be used and what clues will they be told to look for? Can we capture or turn those people? How will they be passing their data out of the country, and how can that be technologically blocked? What computer networks does the US think are most likely to hold data that reveals where he is? Are they right? If so, what would be the impact on our war effort if we shut them down or otherwise limited internal access? Etc etc.