I hate viruses and so does everyone who ever got them or get one. Since 2006 1 billion people have Internet access which means that now more than ever to viruses. Viruses come in different forms and with different problems in each type. Some viruses are designed to spoil the entire computer and destroy all the data others have done to show you unwanted advertisements every once in a while.

In any case they should not be on your computer and can be removed manually or by virus removal software. First though lets discuss the most common types of computer viruses and what they can do for you or your computer.

Best known and damage type of virus that exists now is a worm. This type of virus can copy itself and will use e-mail addresses from your address book and send itself to these people. This means that your friends and family could even computers are infected with the virus.

The next most dangerous type of virus trojan virus that is hidden hence the name. Trojan viruses sneak concealing himself as a program that provides a legitimate function. But in fact it is a virus that will damage your computer or steal personal information such as passwords. There is also backup data for backdoor trojan virus which if the computer was infected with it someone can take control of your computer over a network or the Internet.

Another more common virus is just one style file virus. File viruses can attach to the actual software so that whenever you use the software it will be loaded into memory and infects other files associated with this program. This means that the most important documents and data can be destroyed in one click!

The next type of viruses I tell you is the most common on all modern computers but it is Adware and Spyware. Adware is generally only advertisements that are stored on your computer and show them yourself sometimes in random pop-up window or when you enter a Web address which is incorrect. Spyware is actually the worst of the two because spyware can log your every keystroke record every site you go and report your statistics to the person or company.

This is really the main types of viruses that exist and are most common on the Internet today. With this knowledge combined with virus removal software you will have the opportunity to make sure that every virus is removed and not still lingering somewhere waiting to come out again.

Before concluding this article I would like to give you some very important tips that everyone should know taken first hand from my experience with computers in the past 10 years.

The most important advice is dealing with a computer crash with the virus. Bad people do bad viruses and those viruses will be very bad to do things like delete all the data destroying the operating system and perhaps even actually change you BIOS. Your BIOS controls a lot of technical details about the computer as your exact processor speed system temperature and most of the components.