A person who is smarter than me pointed out a good question:
Why would the Russian hackers leave footprints that pointed to them? If they are as good as the intelligence services claim they are, one can be sure that they could have hidden their tracks well enough that there would be no proof that they were, in fact, the hackers.
I call bullshit on the whole 'The russians did it" story. It fits the meme (and need to blame someone else) of the DNC and other sore losers. Further, it doesn't fit the reality that not only did Trump win against predictions, but the fact that Republican candidates won against predictions in many state and local contests as well. I cannot believe that the Russians were involved in all those unexpected wins across the country as well.