虚拟的攻击,真实的威胁
Airplanes couldn’t take off. Ships and trucks couldn’t deliver products. Factories stopped running. Hospitals had to turn away patients. It was June 27, 2017, and an invisible enemy was attacking businesses around the world. That enemy was a computer virus. Security experts named it NotPetya because at first it seemed similar to a 2016 virus named Petya. But it was much worse than Petya. “It was the worst cyberattack ever,” says Craig Williams, a cybersecurity expert at Cisco in Austin, Texas.
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