Hello everyone
I'm new with Ubuntu and I have an UBUNTU 14.04 server on an ESXi virtual machine that I need to send it as demo system somewhere, I need to restrict all ways to change root password and access source codes on the system.
after digging through internet I found below link that explain 4 methods to change root password:
http://www.c-integration.com/blog/sh...g-the-password

Is there any other ways to access root privileges on UBUNTU system? and how to restrict them?

Thank you very much