This time it's considered to be the most serious problem yet.
The machines, made by Diebold Elections Systems, are "much, much easier to attack than anything we've previously said," said Avi Rubin, a Johns Hopkins University computer science professor who first cast doubt on the reliability of the technology in a 2003 report.
"On a scale of one to 10, if the problems we found before were a six, this is a 10. It's a totally different ballgame," he said.
