Anyone with a Mac computer running Mac OS X would be wise to check to ensure your computer is not infected with the latest Malware that has been confirmed in some 600,000 Mac computers (with 50% of them in North America). You can do so with fairly easy to follow instructions on this page on the Digital Trends Website
Scroll down to the section 'Am I Infected?' (beneath the world map) and follow the few steps. They even tell you where to find the 'Terminal' application which you'll use. I checked our 3 Mac computers and we're clean in this household!
The above article also recommends you disable Java. You may find that even though they suggest that Java should be disabled. But if you find you need/want Java, Apple this week also released a Java patch (update) that is secure. You will find this update here: http://support.apple.com/kb/DL1516