Don't make up your own definitions!

This is a ComputerWorld article about the "layered defense" model failing when exposed to the Welchia worm. Total bullsh*t, of course.

How do you prevent your network from getting the Welchia worm a month after the patch is issued? INSTALL THE PATCH, DAMMIT!

Using the "we're safe, we have a firewall" as a network defense either means you're severely deluded or you have no users on your network. And any previous reference you've made to "defense in depth" or having a secure network compounds your problem, making you look like an *ss.