If someone switches their admin account to a non-admin (presumably after creating a new admin account) they will have a lot of folders and files that are still owned by them in places like /Library and /Applications. This could still compromise security. Unfortunately, I haven’t found a good GUI mechanism to fix this problem. It is easy from the command line
sudo chown -R root:root /Applications
With all the applications out there it is hard to be sure that this won’t cause some issues. But I’ve done this before and never had trouble.
If someone switches their admin account to a non-admin (presumably after creating a new admin account) they will have a lot of folders and files that are still owned by them in places like /Library and /Applications. This could still compromise security. Unfortunately, I haven’t found a good GUI mechanism to fix this problem. It is easy from the command line
sudo chown -R root:root /Applications
With all the applications out there it is hard to be sure that this won’t cause some issues. But I’ve done this before and never had trouble.