'Phantom' User Accounts
I am new to Apple Server, indeed I'm new to servers in general, and I'm attempting to start simply and learn as I go along ; so I apologise if this question seems silly.
After setting up a Webdav server, I seem to have inadvertantly created 76 new users with names like Warm Daemon, Apple Remote Desktop, CVMS Root.
Do they pose a security risk? Is it safe to delete these user accounts?
Mac mini, Mac OS X (10.7), Lion Server