Viruses

I know that a virus is something that messes up your computer.

I want to know what it does to the comoputer and how you can elimnate it.

http://www.microsoft.com/security/pc-security/virus-whatis.aspx
http://www.ust.hk/itsc/antivirus/general/whatis.html
http://netforbeginners.about.com/od/v/f/virus_def.htm

Viruses vary from what they can do for ex from an anoying message to deleting your hardive
Viruses can be attched to a program or eveb replace the program
You can get them in an email attachment or in an insttant message.
They are ussually disguised as funny photos or greeting cards.
Viruses are not trojan horses
The diffrence is the trojan horse doesn't replicate itslef like the virus does
Its called a virus because its spreads very fast like the virus and duplicate also like the virus
Trojans can also be addtions of the virus that don't replicate
Whe you download a virus a adware or spyware could come with it

This connects to my life because I'm always on the computer wether it facebook or school stuff. Now I know that I need to check to mkae sure the files i downoad don't have a virus. Also I should buy an anti virus software incase I do get a virus.

Who created the virus.