Mac OS X Security Vulnurabilities
The SANS Institute, (SysAdmin, Audit, Network, Security.. in case you were wondering) has listed their "Twenty Most Critical Internet Security Vulnerabilities", and Apple's OS X ranks among them. Some people may be surprised by this, but no matter, almost every major application used by everyday folk is on the list including Windows Services, Internet Explorer, MS Outlook, Firefox, McAfee and and Symantec Anti-Virus, etc..
The reason why this has become a headline is because of the common misperception that OS X does not have internet vulnerabilities. No software is perfect, and OS X is software, so OS X is not perfect. Regardless, OS X is still seen by many as one of the most secure.
The most important and simple advice from this list is to STAY CURRENT WITH ALL SOFTWARE UPDATES!!! Set your automatic updates to check weekly. If you want to get more detailed information, then check it out. It's worth a quick scan.