How can a hidden account remain persistent even after the original cloned account's password is changed or deleted?

By cloning the permissions of an existing account (e.g., account `a`) to create a hidden account (e.g., `aaa$`), you can then change the password of the original account `a` or even delete it, and the hidden account `aaa$` will remain valid. This persistence works because the cloned account has its own registry entries with the same security identifier (SID) or permission set, so password changes or deletion of the original do not affect the clone.