This attack is the ultimate form of Remote Desktop Protocol (RDP) compromise. RDP is one of the most common ways to deploy ransomware because cybercriminals can compromise administrator accounts and systems that control entire organizations. As CrySis encrypts a computer, it also removes all of the automatic backups, so users can’t use them to restore files. Inception: First detected in February 2016; took a few months to spread; Attack vector: Remote Desktop Protocol (RDP)