By day I'm a PC, at night I'm a Mac. My first (successful) Linux install was RedHat 5.1 and I was a Novell Netware 3.1 CNA (woot!). If it has a keyboard, I've probably worked on it, broken it and partially repaired it. Today I work in InfoSec and am a CISSP which means I know how much I don't know about securing systems.