ACL (Access Control List)

An Access Control List (ACL) is a set of rules used by computer systems and networks to determine who can access certain resources, like files or websites. Think of it as a security list that specifies permissions—such as read, write, or execute—for individual users or devices. When someone tries to access a resource, the system checks the ACL to see if they are allowed. This helps protect sensitive information and ensures only authorized users can perform specific actions, maintaining security and control over digital assets.