[martin_fierro]

For what it's worth, ClamAV is a free malware scanner for MAC (and Linux) software.

It can provide a measure of protection when downloading software from sites you're not familiar with.

But as always, be careful when downloading from untrusted sites!

[Swordmaker]

For what it's worth, ClamAV is a free malware scanner for MAC (and Linux) software.

Like all anti-virus software for OS X, it turns OFF GateKeeper to work so that IT can find the Trojans that may come in. I don't recommend using it. Most other Mac experts take the same approach to Mac anti-virus.

Apple's GateKeeper will recognize all known Trojans and their families of variants and warn the user before allowing them to download. It is a system level protection and operates without taking any system resources or making a hit on operations.

A/V is not a system level operator and needs the download to occur first and be loaded into some area of memory for scan, so on install, it de-activates GateKeeper to disable all such warnings. That is NOT a good thing.

Many of the other Mac Anti-Virus solutions are worse than the problems they are designed to prevent. . . adding performance hits that are unacceptable for little gain. As I said, they all turn off Apple's own native protections that are working quite well.

[amigatec]

Also if you notice the vast majority of virus signatures in these programs are for Windows virus. It just takes up space protecting me from stuff that doesn't hurt my Mac.

These are a MAJOR waste of space.