It's hard to imagine a government that routinely invites 'unhappy accidents' on people they don't like would be unable to find someone.

I have a conspiracy theory that the day he does get rubbed out, he won't publicly die, he'll just be "hiding" forever. Some nefarious organization will privately fill his role and take over Wikileaks.

Kind of like Osama Bin Laden, who these days is more of a fictional character than an actual person.