Right now, I think most people don't run their Macs with any kind of anti-virus. The only one I do know for OS X is ClamXAV, so you could take a look into that.
Also, being a PC technician, surely you know MAC refers to a network Media Access Control address, and not the computer, which is a short form for Macintosh.
I've already decided that I'm making the switch to a MAC I was wondering if there is any security software I would need. I know MAC's can't get viruses and all that but what about trojans, spyware, malware and adware. I'm a PC Technician and know the usual routine as far as Windows goes. I was wondering what precautions I should take in regards as to keeping my MAC clean and in tip top shape? Any information would be greatly appreciated.