The US presidential election was correct, according to a crowdfunded effort to recount the vote in key states, but the review also highlighted the unprecedented extent to which the American political system is vulnerable to cyberattack, according to two computer scientists who helped the effort to audit the vote. J Alex Halderman and Matt Bernhard, both of the University of Michigan, campaigned in favor of a recount of the US presidential election, which was eventually spearheaded by Jill Stein, the Green party candidate. Only the Wisconsin recount was substantially completed, with the recount in Michigan eventually stopped and a potential recount in Pennsylvania killed before it had even begun. But the researchers say the recounted counties and precincts were enough to give them confidence that Donald Trump is the genuine winner of the election. “The recounts support that the election outcome was correct,” Bernhard told the Chaos Communications Congress cybersecurity convention in Hamburg, where he and Halderman gave a talk summarising their findings.