Of interest is that the software update also includes malware removal software that silently checks if macs were hit by the known malware and takes counteractions as needed.
Available for: Mac OS X v10.6.8, Mac OS X Server v10.6.8, OS X Lion v10.7 or later, OS X Lion Server v10.7 or later, OS X Mountain Lion 10.8 or later
Description: This update runs a malware removal tool that will remove the most common variants of malware. If malware is found, it presents a dialog notifying the user that malware was removed. There is no indication to the user if malware is not found. This update is available for systems that installed Java 6.