I know what you thinking, Macs can't get viruses right? Well, while mostly that's true, there have been a few over time that have slipped through the cracks. This latest Trojan really took the world by storm. Literally. According to AppleInsider, A trojan horse virus named "Flashback" that surfaced last year is believed to have created a botnet including more than 600,000 infected Macs around the world, with more than half of them in the U.S. alone.