Settings that control what users or apps are allowed to access or modify within a system, app, or file. For example, file permissions determine who can view, edit, or share a document.

Permissions control who can access or modify files and data. Ensuring proper permissions is crucial for protecting sensitive information, reducing the risk of unauthorized changes or data breaches, which ties into harm reduction. Properly setting permissions improves accessibility by allowing users to collaborate securely. From a knowledge stewardship perspective, permissions maintain the integrity of shared data, ensuring it is only accessed or altered by authorized individuals.