So, if I'm running a bunch of Twitter bots, I log them in manually, then leave them logged in. It's a solution that slows things down by about a minute. 
The bots themselves are easy to spot but the real problem is that they can drive conversation in a couple of different ways without having to interact with people. You get a fake story out of Bulgaria about Heidi Cruz writing the language of NAFTA and have it retweeted by bots 3 or 4 hundred thousand times, a fair number of people will believe it despite the impossibility.
People can shrug their shoulders and say "Well that's free speech" but I don't buy it. We're talking about computer generated "speech" coming from foreign entities seeking to influence our election. After all, they aren't seeking to influence America for our own good, they're seeking to influence America for their own ends more often than not to our own detriment.
Nothing disgusts me more than seeing so called conservatives railing on about illegals voting only to turn around and say its OK for a foreign entity to manipulate our people and thus our elections just because they appear to be on our side. These outside entities are not on our side, they're on their own side.