A three-pronged wave of cyber-attacks aimed at wrecking Ukraine’s presidential vote – including an attempt to fake computer vote totals – was narrowly defeated by government cyber experts, Ukrainian officials say. The still little-known hacks, which surfaced May 22-26, appear to be among the most dangerous cyber-attacks yet deployed to sabotage a national election – and a warning shot for future elections in the US and abroad, political scientists and cyber experts say. National elections in the Netherlands, Norway, and other nations have seen hackers probe Internet-tied election systems, but never with such destructive abandon, said experts monitoring the Ukraine vote. “This is the first time we’ve seen a cyber-hacktivist organization act in a malicious way on such a grand scale to try to wreck a national election,” says Joseph Kiniry, an Internet voting systems cyber-security expert. “To hack in and delete everything on those servers is just pillaging, wanton destruction.” That wanton destruction began four days ahead of the national vote, when CyberBerkut, a group of pro-Russia hackers, infiltrated Ukraine’s central election computers and deleted key files, rendering the vote-tallying system inoperable. The next day, the hackers declared they had “destroyed the computer network infrastructure” for the election, spilling e-mails and other documents onto the web as proof. A day later, government officials said the system had been repaired, restored from backups, and was ready to go. But it was just the beginning.