Shadow Workers is an open source command and control (C2) framework and proxy tool designed for penetration testing activities. The tool focuses on exploiting Cross-Site Scripting (XSS) vulnerabilities and malicious Service Workers to establish command and control channels. It provides an interface for creating and managing C2 servers, enabling penetration testers to test and exploit web application vulnerabilities. The framework supports proxy functionality to facilitate communication between compromised targets and the C2 infrastructure. Shadow Workers is specifically designed to assist security researchers and penetration testers in assessing web application security through Service Worker exploitation techniques.