The CASB Default Admin Profile has new users added.
This is expected behavior. CloudSWG (WSS) admins are being added to the CASB default admin profile automatically during login in case they need to access audit data received from CloudSWG. This data can be accessed via links to the CASB data. To option out of the feature contact support. Without this feature CloudSWG admins that require CASB access would have to have the access added manually.