The admin access notification feature is an eye-opening attribute! If there isn't a page to log into, then they'll go somewhere else. It would be suspicious for anyone other than myself to access the admin panel, so once I'm notified of a threat, I'll usually just block their entire IP range through httaccess, and ask questions later when someone mentions they can not access my site. The idea of being notified via instant message or email is a crucial tool in order to prevent admin access from snoops or hackers.