Cybercriminals could adopt and modify the code included in a proof-of-concept ransomware program in order to launch their own attacks, warns Trend Micro. (Yvon Liu/CC BY-NC-SA 2.0) A developer published via GitHub a proof-of-concept (POC) ransomware program featuring strong compatibility with the post-exploitation tool Cobalt Strike, open-source coding, and extensionless encryption. The author claims the program, dubbed Povlsomware, is designed to be an educational tool for testing anti-virus protections; however, itâs possible that cybercriminals could adopt and modify the code in order to launch their own attacks, warns Trend Micro, which detailed the ransomware in a new company blog post this week.