On June 27, 2017, Russia fired the NSA’s cyberweapons into Ukraine in what became the most destructive and costly cyberattack in world history. That afternoon Ukrainians woke up to black screens everywhere. They could not take money from ATMs, pay for gas at stations, send or receive mail, pay for a train ticket, buy groceries, get paid, or—perhaps most terrifying of all—monitor radiation levels at Chernobyl. And that was just in Ukraine. The attack hit any company that did any business in Ukraine.
