Ransomware is a type of malware attack through which hackers block users’ PC access. Fantom, a recently released ransomware variant, was discovered by malware researcher at security software firm AVG, Jakub Kroustek. Victims will first see a phony Windows Update screen, which was built to make them think they’re downloading a new critical Windows update. In reality, the virus is working in the background to encrypt files so they can be held for ransom. It also targets a massive portion of business users, most of whom work on Windows machines.”]
Source: https://www.darkreading.com/attacks-breaches/new-fantom-ransomware-poses-as-windows-update