Revil

REvil, also known as Ransomware Evil, is a type of malicious software (malware) used by cybercriminals to lock or encrypt files on an infected computer or network. Once infected, victims are demanded to pay a ransom, often in cryptocurrency, to regain access to their data. REvil is notable for its sophisticated tactics, high-profile targets, and ability to operate anonymously by hiding within networks. It has caused significant disruptions across industries by compromising sensitive information and demanding large ransoms, highlighting the importance of strong cybersecurity measures.