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Restoring recent servers list

Scotty,

I believe that my son has a hidden account (perhaps root account) set up on our mac.  Is there a way that you can find and delete this?

Thanks for letting me know.
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It is possible for a user to log into a Mac without common users knowing by enabling root access. This is very rare and the root user would have had to have aquired the knowledge to do so. This would be a sophisticated user. So it is not impossible. Here’s how to find it root is enabled or disabled.

OS X Mountain Lion: Enable and disable the root user

They leave out the step to select “login options” so see below for details...
Screen Shot 2012-12-13 at 10.21.26 PM
Screen Shot 2012-12-13 at 10.21.32 PM

If it says “Enable root user” then that means it has NOT yet been enabled. If it says “Disable root user” then that mean that someone has indeed been using root access on your computer.
This image is a theme.plist hack