摘要
The U.S.cyberattack arsenal poses an emerging threat in the virtual world In mid-May,multiple variants of a ransomware computer encryption virus named Wanna Cry rocked the Internet.The hackers behind the attack demanded money in digital currency bitcoin by encrypting computer users’files and locking
In mid-May, multiple variants of a ran- somware computer encryption virus named WannaCry rocked the Internet.The hackers behind the attack demanded money in digital currency bitcoin by encrypt- ing computer users＇ files and locking them out of their computers.
