Apple's flagship Mac OS X "Tiger" has received a well needed security update, in response to 12 vulnerabilities that could put Mac users at risk of computer hijack, security bypass, exposure of system information, privilege escalation and denial-of-service attacks. Security Update 2005-006 contains fixes for a range of problems, for example adding fixes for multiple known flaws in the PHP programming language, and correcting a serious flaw in the "launchd:" launch daemon.