Exactly - you've gotta have a good attitude. I just recently started working a new job doing cutting edge network security work and one of the guys was setting up a Windows 2003 machine to use as his workstation. He installed 2k3, all of the applications he'd need (no patches, firewalls, or antivirus programs) and then went home for Labor Day weekend. I showed up Tuesday morning and turned on the monitor to discover the machine hit by a couple of worms. And this is a security shop
