Last week, outlined , but the most important thing you need to know is whether your Mac has fallen victim to it. You could muck about in Terminal to get the answer, or you could grab , a small utility from programmer .

First reported by , Leon's program handles the task of combing through your Mac's contents to find any traces of the Flashback malware.

Here's how it works: When you launch the app, click its one button--Check for Flashback Infection. If the results display includes the message "No Signs of infection were found," you can breathe easy. If you're infected, the utility alerts you. Leon's code doesn't remove the malware; instead, it points you in the right direction to go about cleaning up your system, which includes running .

The latest variant of the Flashback trojan horse is capable of installing , even if all you did was visit a maliciously-crafted webpage. The malware exploits a Java vulnerability first patched by Oracle back in February; Apple only released an update to late last week, after the Flashback malware had already infected more than .

The curious can download the as well.