The common computer virus has been around as long as the desktop PC. As faster and easier ways appeared for viruses to spread, software was been made to combat the threat. Over the past 15 years Anti Virus software has grown to a must have product for any microsoft windows operating system.

Here are some of the brands:

- AVG
- Norton
- Kaspersky
- Mcafee
- NOD32
- Avast
- Trend micro
- Windows Defender