A sandbox policy is a set of security rules that restrict the actions and resources accessible to a process or application, isolating it from the rest of the system. By enforcing these limitations, sandbox policies help prevent potentially harmful software or code from causing damage, stealing data, or spreading malware. Sandboxing is commonly used to safely execute untrusted code, analyze malware, or test applications in a controlled environment. The policy defines what files, networks, or system resources the sandboxed process can access, minimizing the risk of compromise. Sandbox policies are essential in modern cybersecurity strategies for both individual devices and enterprise environments.