There are no, repeat NO, proven viruses for mac OSX in the wild. That having been said (over & over again), do NOT put any Norton products on your mac - they are more trouble than they are worth. ClamX is used by some to heklp identify & quarantine email carried virii, worms, trojans that can reside on your computer & potentially be spread via email to PCs (think I've got that right). I've been using macs since 1986, without virus protection, & have never had a virus. Period. Full Stop. Don't worry. Be happy.