he leaked them. he had to have them for him to leak them. if you're asking how they know he was the leak, idk

>he had to have them for him to leak them

A smart leaker would then delete them and destroy any disk they touched.

Even if they knew he leaked them, there's no guarantee he would have them on his machine. Which would be another reason to ‘sprinkle some crack on em,' that way he would still be punished if he was prepared.

> A smart leaker would then delete them and destroy any disk they touched.

And the prosecutors will put them back. Just like police inserts a small package in your backpocket when they arrest you.

>Which would be another reason to ‘sprinkle some crack on em,'

I would assume they would know by doing a standard legal investigation where they get a warrant from the judge and look. I don't know what evidence they gave in the warrant application in this case but usually they have to be more than a blind shot in the dark request.

Thinking they ran an aboveboard investigation of the person they think leaked their surveillance tools is optimistic. Given what I've read about the CIA at that time plotting the assassination of Assange, I don't share your trust.