>Here is the congressional sworn testimony of Shawn Henry, the CEO of Crowdstrike, specifically saying that there is no concrete evidence of Russian hacking of the DNC.
It feels like you're being deliberately dishonest. Your "money quote" is about whether there were was concrete evidence of the hackers exfiltrating data from the DNC, not about "Russian hacking of the DNC" .
What Shawn Henry is saying there is that they have evidence of the hackers preparing data for exfiltration, but no
concrete evidence of the data being transferred out. Unless the malware used by the hackers stores detailed logs, this is to be expected. It would be unreasonable to doubt that the exfiltration happened on this basis.
>In fact, there was a smoking gun to a disgruntled ex employee
There wasn't. None of your links substantiate this claim.
The wikipedia section consists of uninformed clowns like Sabu and hilarious quotes like "State-sponsored attackers don't create cool names for themselves like 'Guardians of Peace' and promote their activity to the public.". There's no genuine attempt at convincing criticism of the NK attribution to be found here.
>As for federal indictment on North Korea, that means nothing on the merits or dubiousness of the North Koreans hacking Sony
The federal government has a pretty good track record of getting these things right. The DOJ certainly believes that NK did the Sony hack.