Macs aren't vulnerable to all of those pesky Windows viruses; so goes popular wisdom. That's true, of course, but the latest epidemic shows Mac users definitely aren't immune from malware altogether. Ars Technica reports that at least 600,000 Macs are in the throes of a nasty Java trojan infestation.
Mac users aren't helpless, thankfully. Ars points out that Apple has sent out a fix through Software Update, its automatic system updates scheme. Also, security firm F-secure offers instructions so that Mac users can check if they're infected—and get rid of the trojan if they are.
Still, this is a sobering reminder that, ad campaigns and slogans aside, OS X users aren't getting a free ride as far as malware is concerned.