It can significantly disrupt your systems performance and has the potential to wipe out everything on your hard disk.

So, what is a computer virus?

Computer viruses have inundated the computer user for a long time now.

5 most dangerous computer viruses of all time

Here are five most dangerous computer viruses of all time:

1.

An attachment in the e-mail was what caused all the trouble.

The original worm had the file name of LOVE-LETTER-FOR-YOU.TXT.vbs.

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The damage because of this fastest-spreading mass mailer worm was a whopping $38 billion.

Code Red

It debuted in late 2001 taking advantage of the Microsoft Internet Information Servers flaw.

The variations of the virus plagued the Internet for several months.

This virus caused a total damage of approximately $2.6 billion dollars by hitting almost one million PCs.

source: www.techworm.net