In 2008, researchers were touting the defeat of the Storm worm — the most notorious example of the malware category that self-propagates through remote exploits, email, network shares, removable drives, file-sharing or instant messaging applications. Some would argue that despite the name, Storm was not a traditional worm at all, since it required a human-computer interaction to spread. Last year saw only two worms in the 20 most prevalent malware families, with trojans becoming the outright leader of malware categories.
