It's not so cut and dried.
Has Russia been hacking? Yes. All over the world. Read yesterday that Russian hackers are being held responsible for attacks against TV5Monde in France - a hack so brutal that it almost took 10 cable channels off the air permanently. Why TV5Monde? British intelligence deduced, 'Because they can, they enjoy testing the waters and flexing their cyber-muscle.'
So, yeah, I believe they are likely responsible for some of the information that Wikileaks has recently produced, but probably not all of it. Where I draw issue here is with the pejorative nature of claiming the hacks/leaks are 'influencing an election' ... especially when it is being conveniently framed to fit a ludicrous, conspiratorial narrative. If Russia is truly responsible, then Americans should be thanking the Kremlin for making the election process much more transparent that it has ever been before.
For a nation that we supposedly 'crippled' with 'robust and effective' economic sanctions, the Russians have done a pretty good job of rubbing our faces in our own supposed moral authority and trouncing us at our own game in the Middle East.