A second variant of the Mac OS X Trojan referred to as Backdoor.OSX.SabPub.a or SX/Sabpab-A is exploiting a Microsoft Word security hole, not the usual Java vulnerabilities used before.
…Instead, you’ll need to update Microsoft Office 2004 for Mac and Microsoft Office 2008 for Mac. Thankfully, this security vulnerability is from June 2009, so if you keep your Microsoft software patched, you should be good to go. The last parts still apply.
If you have software that hasn’t been updated in almost three years, you deserve to be hacked.