> A user app cannot mess with the system UNLESS the user enters the password. The unix way is very clean and true. This is mine, this is yours. And you could add more rules, as you like it. Wants secure level? Sandbox? Mixed ownership. One thing is missing: security against user and administ- rator themself. I found 770 perfect gadget, despite I say this or that. If I would like the really secure system, I might disconnect it from the net and from myself. There exist system called "plan9", which has no meaning of remote installing or messing with permissions of files. Admin is limited to the phisical access and nothing more. (All two or three n900 with this approach would be safe.) Even openvms philosophy could get more security. How could I replace cpu on my 770 with alpha and add 2 gb of memory? Zoran