Symantec set up a simulated voting station that shows how electronic systems might be hacked to alter actual vote tallies for just a few hundred dollars. Researchers found that while its possible to change the number of votes cast for each candidate, it would be very difficult to do so on a large enough scale to swing the election one way or the other. But enough machines in random precincts could be provably compromised so that general public confidence in the official outcome would be undermined, says senior vice president for cyber security.”]
Source: https://www.csoonline.com/article/3126567/can-you-hack-the-vote-yes-but-not-how-you-might-think.html