A contractor is asking me to provide him with root access from day one.
Skipping the obvious "no-no"... as he's arguing that in order to do a full review of the system and identifying SPOF/etc, he needs root access, what can a root user read/see that a regular user cannot (excluding the root folder and similar)?
To say it in another way: "what can't a regular user read?", "what does he need root access for?"
Please don't down vote without explaining why