Privilege management is the set of rules and controls a system uses to decide which users, services, and processes may perform sensitive actions. In practice, it answers questions like who can read protected data, change system settings, inspect another process, or run code with elevated rights. Good privilege management follows the principle of least privilege: each account gets only the access it needs, and no more.
In cyber security, weak privilege management can turn a small mistake into a major breach. Attackers often look for flaws in authorization logic, misconfigured roles, unsafe defaults, or trust checks that can be bypassed to gain access to secrets or administrative functions. Defenders rely on strong privilege separation, careful review of kernel and application permission checks, and monitoring for unusual privilege changes. When privilege management fails, local access can sometimes become data theft, system tampering, or even root-level compromise.