Are you a cyber sleuth? Test your malware IQ

Find out how much you really know about the underworld of spam, botnets, viruses, and other forms of cyber crime

Malware comes in many guises. For most people it's a constant source of irritation. But for security mavens, the malware world offers all sorts of fascinating nooks and crannies -- charlatans and characters, flashes of brilliance, groaning idiocies, and irony.

Think you know malware? You may be surprised. Put on your sleuth specs and set your ever-so-slightly-gray hat at a jaunty angle and see if you're in tune with the multi-billion-dollar industry -- or just a victimized bystander waiting to get duped by the next rogue bits.