The Computer Virus Catalog
- Cookie Monster by Lawrence Slater First coded in 1969, Cookie Monster is considered one of the first computer viruses ever, halting all progress on a given computer until the user typed "cookie." Like most early viruses, it was built more as a practical joke than a legitimate security threat.
- Techno by Joost & Nick This DOS-era bug would infect a computer's command file, then blast out 110 seconds of techno music one out of every ten times the computer started up.
- Lichen by Jonathan Zawada Known for its distinctive visuals, the Lichen virus would lie dormant for a month, then take over the computer with a vivid fungal screensaver.
- Happy99 by Joshua Checkley This was the first virus to move by email, and the results were staggering. By 2000, it had spread to three continents, and when a researcher posted a protective patch, more than a million computers installed it.
- ILOVEYOU by Darius Ou Dahao The biggest virus of 2000 was a triumph of social engineering, causing as much as $8 billion in damage worldwide. As it turns out, people will always open an email that says "ILOVEYOU."
- Stuxnet by Mel Nguyen The first computer virus used as an international weapon, Stuxnet targeted a single Iranian nuclear reactor, kicking off a new era of cyberwar in the process.