Access permissions are rules that determine which users, services, or devices can view data or perform actions in a system. They define what an identity may do, such as read a file, change a setting, or call an application tool. Permissions are commonly assigned through roles or policies and enforced by applications, operating systems, and cloud services.
In cybersecurity, carefully scoped permissions limit the damage from compromised accounts, mistakes, or unsafe automation. Too much access can expose sensitive data or let an AI agent take actions beyond its intended purpose. Defenders should grant only the access needed, review it regularly, remove stale permissions, and log sensitive actions. Testing permissions and requiring human approval for high-impact operations can help keep automated systems controllable.