I wrote something in the My Cloud forum
If it works properly it should restruct access to Public to the owner/admin and any other user should be denied access to Public.
Done the same thing for the My Book Live andMy Book Live Duo, but the procedure between the My Book and the My Cloud has changed. I’ve been trying to keep the Public folder in place, but altewr the permissions at the file system level so the only users that have access is the the owner/admin and root. This is not to break anything else.
You tweak at your own risk. Let me know how you get on.
The process for the My Cloud, if correctly followed, is reversable as I’ve done it in away where you copy the permissions set on Public at the factory, you create an additional share with the desired permisions and then you copy the ACL of that directory over the ACLs in and in the Public directory.
I agree that having the Public share should be a choice.