In 2017, Jeff spearheaded the creation of the DEF CON Voting Machine Village. Debuting at DEF CON 25, the Voting Machine Village allowed hackers to test the security of electronic voting machines, including several models still in active use in the US. The machines were all compromised over the course of the conference by DEF CON attendees, some within hours of the village's opening. The resulting media coverage of the vulnerability of all tested machines sparked a national conversation and inspired legislation in Virginia.