To be clear, there’s no evidence any votes were hacked during the 2016 presidential election. But there hasn’t been much research on the voting machines to see if it’s possible.
“The exposure of those devices to the people who do bug bounties or actually look at these kind of devices has been fairly limited,” said Brian Knopf, an internet of things security researcher for Neustar, a security analysis company. “And so Defcon is a great opportunity for those of us who hack hardware and firmware to look to these kind of devices and really answer that question, ‘Are they hackable?'”