Have you updated lately?

Every where you look, there seems to be mention of a new piece of malware.  Lately we've seen Stuxnet, Duqu, and now we have Flame.  A lot of times, malware uses some kind of vulnerability in order to infect your computer.  One of the first lines of defense is having an antivirus product installed.  Another line is to keep your systems updated with the latest patches from your vendor.  No matter what operating system you use, YOU ARE VULNERABLE.  It just depends on how much.  Despite what Apple and others claim, you need antivirus on Macs as well.  So update your systems and update often!