I'm a Windows Admin, I know a little about MacOSX, and I am beginning in Linux.
I have been fighting Trojans/Malware for the last few years at work, it's my favorite part of Windows admining for some reason. I am an InfoSec student and by that I mean I plan on being a student for the next five or ten years. It's a lot of fun, but if I ever get a job in InfoSec I doubt I will call it fun, more like an Ulcer.
Anyway, I enjoy learning, love technology and hope to be a part of this community,
Thanks,
Slart