Now that we’ve discussed the benefits of having antivirus and malware protection, I’m going to suggest a few Apps from the Mac App Store for protecting your Mac.
Bitdefender: Virus Scanner is free, one of the few that boasts the ability to detect Flashback, and is capable of scanning for potential Windows threats that could be tucked away in an email.
ClamXav is also free and uses the open source antivirus engine ClamAV known for it’s fast definition releases.
Kaspersky Virus Scanner $9.99, is a well known application for the PC. What you get with this app is reliable definition updates and streamlined performance; when speed is important, performance might be the determining factor.