
what Marc says in more detail is what I was eluding to. If you are looking only via a view using cleartool protect will keep out the regular user.
The vobstorage is still open to hacking.
If you need real protection, you need to put all the files you want protected in a separate vob and have its vobstorage in a separate dir and protect that separate dir so only the group with permissions (and ClearCase itself) can read what is in there