Browser-Based-Ransomware

CloudGuard Security is a browser-based demonstration tool that exploits the File System Access API to simulate file encryption and delivery attacks without requiring software installation. It operates in two modes: the 'lock' mode, which encrypts files using AES-256-GCM and displays a countdown alert, and the 'drop' mode, which silently writes a specified payload to the user's file system. The tool emphasizes social engineering techniques for permission granting, making it a practical resource for red-team exercises.