Permission review is the process of checking which capabilities each app is allowed to use on a device. Typical permissions include location, contacts, camera, microphone, Bluetooth, storage, and background activity. The goal is to confirm that every granted capability is necessary for the app’s job and to remove anything excessive or outdated.
In cyber security, permission review matters because many attacks and privacy abuses depend on overbroad access. A harmless-looking app with unnecessary location or network permissions can collect sensitive data, build user profiles, or relay information to an attacker. On managed or high-risk devices, regular permission review helps reduce the attack surface and limits how much information software can silently gather. It is a practical defense because it turns a broad trust model into a least-privilege one: apps get only the access they truly need.