Wana Decrypt0r 2.0 Ransomware Screen. Avast David Glance, University of Western Australia A massive malware attack was launched on Friday, affecting at least 75,000 computers in 99 countries. Computers running Microsoft Windows were infected with “WanaCrypt0r 2.0 or WannaCry” ransomware. Once infected, all of the files on the computer are encrypted by the malware, which…