We'll if they are, the dems and Obama better start deleting videos off the internet of Obama rejecting claims of rigging before the election. And I'm pretty sure if I remember correctly, he denied any Russian involvement too.
So Russia is the only enemy of the US that is capable of doing this? The problem with cyber attacks is that those who do it have a 1% chance of being caught. That's after you have actual evidence from ISPs, and computer evidence. If this is a well organised hack by expert hackers, backed by a state, the chance diminishes to less then 1%. There is no way of tracing back to the culprits unless they have an ego trip and start bragging about it (most cases of how the very good hackers lose their anonymity, by their own stupidity).
Even if the Russians did it, and the FBI and DHS were witnessing the hack real time, there would be no way of capturing evidence clearly showing a Russian entity is behind that hack. It's all just speculation at that point. If these are hackers commissioned by Putin, he chose amateurs to do what a proficient 16 year old hacker could do with good equipment.
We've been at this point twice now in Obama's second term, I was surprised no one was talking nuclear war last year when NATO and the US were making aggressive moves near the Russian border. It only picked up (talk of war) when people were going hysterical after Trump won. Nothing has changed for a year and a half now, maybe people relaxed a bit at the start of this year. Most won't be as relaxed this new year though, while Obama is seeing how much he can ruin a country and even the world in 20 days.