No real time to search - but here
Apple Recommends Antivirus Software For Mac OS X
I would agree at one time most viruses/malware was directed at the PC nation, but as MACs have surged in the past few years and now they run Windoze they are the new targets. We use both, I just find PCs are more adaptable from a behind the scenes world. VPNs, remote deskops, etc. Computers are a tool for me, and like I said being proprietary (TOC) and up front cost, just makes it hard to recommend to the bosses that it is a good value for their money. Everyone needs to get what will make their bell chime. In the end it's still just 1s and 0s.