One month after rolling out a dedicated Flashback malware removal tool for OS X 10.7 Lion, Apple has released a "Leopard Flashback Removal Security Update" for the legacy OS.
The 1.23MB download will scan a Mac's hard drive for the Flashback trojan and, if found, will remove the malicious code that at one point affected over 600,000 Macs worldwide. The security update also disables the Java plug-in in Safari, though users can reactivate it by navigating to the Security tab in Safari > Preferences.
Mac OS X Leopard's second update disables versions of Adobe's Flash Player in Safari that do not have the most current security protocols. If detected, Leopard will display a dialog notifying users that the latest Flash Player is not running and will provide a link to the appropriate download. A similar fix was provided last week in a Safari update that followed the rollout of OS X Lion 10.7.4.
Leopard Security Update 2012-003 weighs in at 1.11MB and can be downloaded via Software Update or Apple's Support page.