I actually wouldn't be half surprised if it was your own guys. If I wanted to create the perception Russia was fucking with the US, to build political and public support for more aggressive cyber-operations against them, this is what I'd do.
But it could also be the Russians fucking with you, a non-state actor or even dumb technical/human error, though very coincidental if so.
I don't know how much weight this carries, but a friend of mine seems to be about one step removed from Assange. He's pretty adamant that the hacks came from the CIA. Obviously I don't know, but this guy doesn't seem to have a reason to lie about what he's been told. Of course, whether he's been lied to is another matter.
I guess I'm just throwing more speculation into the pot of Who Fucking Knows.
Not even. Assange was so blatantly in the tank for Trump, it's gotta be the Russians.
As you all try to piece this mess together, let's not forget the history of how Assange came to be known. He started off with the stated purpose of acting against the U.S. and other western nations that kept state secrets. He has a history of releasing information that's directly harmful to the U.S. and its interests. Let's also remember that Russia has a long and documented history of using cyber attacks and disinformation to directly interfere in governments with interests counter to theirs. Lastly, there is still the need/call to apply Occam's Razor to the world of international intelligence operations.
I've personally had too long of an involvement with the intelligence community to be able to, trusted to, or desire to comment much further on this.