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Types of Computer Viruses  
INFORMATIVE 

Tags: virus, computer, email, trojan, worm, internet

Computer viruses have been a plague on mankind since the dawn of the Internet Age. Here are the different types of viruses that you may or may not have encountered.

	Boot sector viruses- Popular in the 80's, these viruses altered a CPU's boot sector
	Companion viruses- These viruses affected MS-DOS systems and created a filename similar to one in the users computer, but with a different extension. When the user tried to open the program without specifying the file extension, the system would open the virus.
	Email viruses- These viruses are transported through e-mail
	Logic bombs and time bombs- These viruses lie in wait for a certain catalyst to set the virus into action, such as The Friday the 13th Virus
	Macro viruses- These viruses lie in the scripting of Microsoft Word or Excel
	Sentinels- These viruses allow the virus creator to control other computers
	Trojan horses- These viruses claim to execute a benevolent action, but release a virus onto the system
	Worms- Not technically viruses, these programs copy themselves within a system without the need for a host file

Lister: ctibbs
Source: Wikipedia – All text in this list shared under the GNU License

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