Interesting video that HP put together.  Obviously it is focusing on printers, but also PCs.  They are showing how if you want to protect your network and its data, you need to protect every device in multiple methods - defense in depth, even though they didn't specifically call it that.

Obviously, this is a little Hollywood-esque, but it was an interesting 7 minutes...

 

http://www8.hp.com/us/en/solutions/security/thewolf.html?jumpid=va_87trme41uf