Mac OS X users have to take action to protect themselves
Unsanity: Paranoid Android
Even with Apple's recently security update, you're still vulnerable to attack using various URL schemes, so I recommend that all Mac OS X users install Paranoid Android to protect themselves. I've seen firsthand just how easy it's going to be to exploit these flaws. If you're using NetNewsWire, FireFox, Safari, Mail.app, and probably lots of other apps, you're vulnerable. With all the phishing schemes out there, it's just a matter of time before you get bit.
Protect your computer and your data.