![Computer Virus Types & Protection | What is a Computer Virus? - Video & Lesson Transcript | Study.com Computer Virus Types & Protection | What is a Computer Virus? - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/thumbnail-what-is-a-computer-virus_117049.jpg)
Computer Virus Types & Protection | What is a Computer Virus? - Video & Lesson Transcript | Study.com
![watchguard on Twitter: "In the 1990s, The Melissa virus, also known as Kwyjibo or Kwejeebo, infected 20% of the world's computers. https://t.co/dY3UB9Ftvu https://t.co/9FIIDxlpXz" / Twitter watchguard on Twitter: "In the 1990s, The Melissa virus, also known as Kwyjibo or Kwejeebo, infected 20% of the world's computers. https://t.co/dY3UB9Ftvu https://t.co/9FIIDxlpXz" / Twitter](https://pbs.twimg.com/media/DSJRG94VwAE7Mki.jpg)
watchguard on Twitter: "In the 1990s, The Melissa virus, also known as Kwyjibo or Kwejeebo, infected 20% of the world's computers. https://t.co/dY3UB9Ftvu https://t.co/9FIIDxlpXz" / Twitter
![Today In Infosec on Twitter: "1999: David Smith, the confessed author of the Melissa virus, pleaded guilty to computer crimes related to Melissa. He was released on bail and wasn't sentenced for Today In Infosec on Twitter: "1999: David Smith, the confessed author of the Melissa virus, pleaded guilty to computer crimes related to Melissa. He was released on bail and wasn't sentenced for](https://pbs.twimg.com/media/DuBxNICVYAAHjnq.jpg)