As a result, the app slithers its way inside without being clearly authorized by the user. The software under scrutiny is making the rounds via bundling, where its installer clings to the setup clients for other utilities – benign ones – in such a way that whoever is performing the install isn’t notified of the extra component. That’s where the fundamental difference lies between PUAs (potentially unwanted applications) and regular system optimization tools: the former come unannounced. At that point, the admin is usually wondering how on earth this program installed itself on their computer in the first place. When the application called Advanced Mac Cleaner gains a foothold on a macOS machine, it attempts to throw the user off their routine trail by reporting numerous problems with the system.