I received quite a few phone calls and emails tonight regarding the latest malware for the mac. This one has been in the news for quite a while. Apple issued a patch this week for 10.6, 10.7 and OSX Lion 2012-001
Software Update: I know you all faithfully update your Mac regularly, but in case you have not done it in a while, this might be a good moment to do so: Go to the little Apple icon in the left corner of your screen. Click on it and select Software Update. Software Update checks for available updates. In the Software Update window, select the items you want to install, then click Install. Usually, you should install all available updates. I usually update one item at the time. After installation is complete, restart the computer if required. Don't try this with dial up.
Safari Users: if you use Safari, select Preferences from the Safari menu, click General, then un-check the box labeled "Open 'safe' files after downloading". This will prevent installers and other files (images, text documents, etc...) from opening automatically when you download them. In addition, don't open any downloads that you weren't expecting--this will prevent you from being taken advantage of by so-called drive-by downloads and other threats.
There are quite a few articles online regarding this malware, and not many people were effected.http://www.zdnet.com/blog/bott/apple-releases-flashback-removal-tool-infections-drop-to-270000/4775
If you are still worried it will get your machine and want to know how to disable java in Safari, Chrome and /or Firefox: Protect Your Mac From Flashback: How To Disable Javahttp://www.applegazette.com/mac/protect-your-mac-from-flashback-how-to-disable-java/