What a timely article. I was attacked just today. Luckily, when the phoney pop-up appeared on my MacBook Air, I did not click on anything. I was worried when my screen was rendered useless and went to screensaver mode. I called Apple customer support and received step-by-step instruction for resetting a few things. Thankfully, I am up and running again.
I was surprised as I thought Macs were more immune from attacks such as this. What antivirus package do you recommend?