Apple on Monday released a critical update to its version of Java for Mac OS X systems that plugs at least a dozen security holes in the program. More importantly, the patch includes fixes for a flaw that attackers have recently pounced on to broadly deploy malicious software, both on Windows and Mac systems.
Mac malware is back in the news again. Last week, security firm F-Secure warned that it had discovered a Trojan built for OS X that was disguised as a PDF document. It’s not clear whether this malware is a present threat — it was apparently created sometime last year — but the mechanics of how it infects Mac systems is worth a closer look because it challenges a widely-held belief among Mac users that malicious software cannot install without explicit user permission.
A new version of the infamous Koobface worm designed to attack Mac OS X computers is spreading through Facebook and other social networking sites, security experts warn.
Security software maker Intego says this Mac OS X version of the Koobface worm is being served as part of a multi-platform attack that uses a malicious Java applet to attack users. According to Intego, the apple includes a prompt to install the malicious software: