After an election marred by hacker intrusions that breached the Democratic National Committee and the email account of one of Hillary Clinton’s top staffers, Americans are all too ready to believe that their actual votes have been hacked, too. Now those fears have been stoked by a team of security experts, who argue that voting machine vulnerabilities mean Clinton should demand recounts in key states. Dig into their argument, however, and it’s less alarmist than it might appear. If anything, it’s practical. There’s no evidence that the outcome of the presidential election was shifted by compromised voting machines. But a statistical audit of electronic voting results in key states as a routine safeguard—not just an emergency measure—would be a surprisingly simple way to ease serious, lingering doubts about America’s much-maligned electoral security. “Auditing ought to be a standard part of the election process,” says Ron Rivest, a cryptographer and computer science professor at MIT. “It ought to be a routine thing as much as a doctor washing his hands.” … While there’s no indication that polling places in the three states Halderman calls out were hacked, it’s well established that electronic voting machines are vulnerable to malware that could corrupt votes. Many US voting machines today scan a paper ballot that the voter fills out by hand, and many electronic systems produce a paper record as well. In fact, Halderman notes, about 70 percent of Americans live in voting districts that leave a paper trail. record exists that can be used to check its digital results. But all too often, no one ever does, he writes. “No state is planning to actually check the paper in a way that would reliably detect that the computer-based outcome was wrong,” Halderman says.