For three years now, cryptographer Matt Blaze (previously) and his colleagues have hosted a Voting Village at Defcon, the annual hacker con in Vegas, in which all comers are welcomed to try to compromise a variety of voting machines that are in actual use in American elections.

Every year, security researchers gather at Defcon's Voting Village to probe voting machines and report on the longstanding, systematic security problems with them, in order to give secure voting advocates the ammunition they need to convince Congress and local officials to take action into improve America's voting security.

Back in 2012, Symantec researcher Bryan Varner bought some used US voting machines on Ebay and found them to be incredibly insecure and full of real, sensitive election data; in 2016, he did it again and things were even worse.