The big problem: Cyber Ninjas auditors broke a slew of rules that traditional auditors follow, including violating what’s known as the “chain of custody.” That’s a complex system by which election machines are always locked up, under video surveillance or attended by multiple election officials to ensure there’s no opportunity to tamper with the machines or their software. When Cyber Ninjas couldn’t verify the chain of custody, Arizona Secretary of State Katie Hobbs, a Democrat, decertified the equipment.