The principle of least privilege is a security concept where a user is given the minimum levels of access, or permissions, needed to perform his or her job functions. This principle limits the access rights for users to the bare minimum necessary to perform their work. This helps to reduce the attack surface and minimize the potential for misuse of high-level access rights. The other options are incorrect because 'Complete autonomy' refers to having total independent control which does not limit permissions, 'Access all areas' typically implies no restriction on access permissions, and 'Permission auditing' is a process of reviewing permissions, not assigning them.