Viruses are usually programs that can attach themselves to files and replicate themselves repeatedly; they can alter and replace the contents of other files in a way that may damage your computer.
A virus is a program that is normally installed without your knowledge on your computer. Once there, the virus tries to replicate itself. The virus:
- uses some of your computer’s system resources,
- may alter or damage files on your computer,
- probably tries to use your computer to infect other computers,
- may allow your computer to be used for illegal purposes.
Source : Official F-Secure Brand
Editor by : BEST Antivirus KBS Team
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