The World's Worst Viruses

Some viruses and worms won'tdestroy your data, while others dotremendous damage. For example, the LoveLetter virus overwrote files and inserted viral code on hard drives around the globe two years ago. "As far as what [virus writers] can do, the sky is the limit," says April Goostree, virus manager forMcAfee.com. "In the antivirus industry, we never say 'never' anymore. Because as soon as you do, you are going to be proven wrong. It's anybody's guess about what the next virus will do." Here's a look at ten of the most malignant viruses and worms of all time. 10. Surreptitious Sircam 9. Red Raider 8. Bad Benjamin 7. Numbing Nimda 6. Tennis Anyone? 5. (Expletive Deleted) Explorer 4. Maniacal Magistr 3. Malevolent Melissa 2. Klez the Conquerer 1. Love Hurts