Via Bruce Schneier, last week the hacker convention DefCon hosted an event at which every single electronic voting machine tested got pwned within minutes:
Also, organizers revealed that many of these machines arrived with their voter records intact, sold on by county voting authorities who hadn't wiped them first.
While many people at the Voter Hacking Village zeroed in on the weak mechanical lock covering access to the machine's USB port, Synack worked on two open USB ports right on the back. No lock picking was necessary.
The team plugged in a mouse and a keyboard -- which didn't require authentication -- and got out of the voting software to standard Windows XP just by pressing "control-alt-delete." The same thing you do to force close a program can be used to hack an election.
Remember, Russian interference in the 2016 election wasn't designed to throw the election to Trump (though that was a "nice to have" for them), it was designed to reduce the public's faith in the entire Democratic system. I'm glad American voting machine manufacturers are helping them.