Next to Adobe Flash, and Acrobat Reader, client-side vulnerabilities found in insecure versions of Java are among the most popular entry points for malicious attackers on the hosts of users with outdated third-party software and browser plugins.
The Oracle Java SE Critical Patch Update Advisory – June 2012 patches 14 critical security flaws. The Apple update is available for Mac OS X 10.6.8, Mac OS X Server 10.6.8, OS X Lion 10.7.4 and OS X Lion Server 10.7.4.
Are you running the latest version of Java, or are you still using and outdated and insecure version of it? Check your Java version immediately (you may need to select “Run this time” when you’re promoted with the “Java needs your permission to run” pop-up), and apply the latest update. Next to Java, also ensure that your host is running the latest versions of the third-party software you’re currently using.