General security & latest trends
랜섬웨어 / RaaS
Definition
Malware that encrypts data for ransom; RaaS sells it as a subscription criminal service.
For executives (CEO·CISO)
It mostly starts with phishing/credential theft, so email security is the first line of prevention; RaaS lowers the barrier so targets are not just large firms. Commonly missed: backups that get encrypted/deleted too are useless — ensure offline/immutable backups, real recovery drills, and a plan for data-leak extortion (double extortion).