The 'Russian hacking' claim is a propaganda scandal, and circus show of clowns that is all coming down on the heads of the DNC and CIA. For one thing, Craig Murray, the former British diplomat who met the source of the DNC leaks, has publicly announced that the leaker is not Russian, but is a DNC-insider:
https://www.craigmurray.org.uk/archives/2016/12/cias-absence-conviction/

Also, the overseer of the 17 different USA spy agencies has said that the "CIA assessment" is not endorsed by their office, and that "(It was) a thin reed upon which to base an analytical judgment."

Further, the "CIA assessment" source did not even claim to conclude what WaPo claimed, but instead said "Intelligence agencies did not have specific intelligence showing the Kremlin directed the individuals to pass the hacked emails to WikiLeaks," and also “A senior U.S. official said there remained minor disagreements among intelligence officials about the assessment because some questions are unanswered.”