I’ve spoken previously about the Mac OS being less secure than it has been advertised (and evangelized). Now, it seems, the bad guys are getting more aggressive. This article talks about a feature in Mac OS X 10.6 (Snow Leopard) which is basically a built-in malware protection. Within a short time, malware authors had already found a way around the protection.
While I still believe that the Mac OS is a smaller target, that doesn’t mean it’s invincible or invisible to attack. Get yourself some protection. Sophos offers a free antivirus for the Mac. It works on any Mac running OS X 10.4 (Tiger) or newer on either Intel or PowerPC platform. I’ve been using it and it was worked well for me. I suggest you do the same. If you have a preferred antivirus software other than this, feel free to use it. I just like to recommend good, free software for any purpose.