Anna Kournikova (2001)
The Anna Kournikova virus is so named because it tricked its recipients into thinking they were downloading a sexy picture of the tennis star. Financial damages associated with Kournikova were limited, but the virus had a big pop culture impact: It became a plot point in a 2002 episode of the sitcom Friends.
For more IT nightmares, check out The 10 scariest cloud outages (and lessons learned from them) from our sister site ZDNet.
Image: Brock Miller/Splash News/Corbis
Fox Van Allen is a Los Angeles-based writer for CBS Interactive covering technology, tech lifestyle and gaming topics for GameSpot, CNET, ZDNet and TechRepublic. He has previously worked as a news and feature writer for a number of other sites, including Techlicious, Tecca, WoW Insider (Joystiq) and Blizzard Watch. In his spare time, Fox is an amateur skydiver, retro gaming and arcade enthusiast, 8-bit pixel artist, podcaster and Twitch live streamer.