Although numerous in their design, computer viruses can basically be broken down into two categories. These include a virus that can either be destructive or simply annoying. In order to combat both, software developers have created anti-virus software that is designed to detect and remove certain types of computer viruses, along with worms, spyware, adware and identity theft.

With modern technology having turned toward computers and the internet, computer viruses are more problematic than ever. While anti-virus software is important, the best approach to fighting against a computer virus is knowing how to avoid one. Here are a few tips:

$Never download an e-mail file from anyone that you do not know. Whether it be a document, photo or other program, simply close the e-mail without downloading it's contents.

$When visiting websites, carefully select reputable companies when downloading files. This may include e-books, freeware, software, photos and other programs. If you are not familiar with the company or the website, there is no way to know what you will be accessing and how damaging it may be to your computer system.

$If you choose to download either an e-mail or internet file, use your anti-virus software to check the file prior to opening it on your computer.

$Always keep your anti-virus software updated with the latest information and upgrades from the manufacturer. When it is time to replace your software because it is outdated, don't wait. New computer viruses are created often and no system is truly safe without some type of updated detection software.

As mentioned earlier, a computer virus can be either damaging to your computer system or may be nothing more than an annoyance. An example of a destructive virus would be one that destroys your hard drive files, prevents your computer from continuing to operate or may cause you to have to re-install the computer's configuration using the Restore CD that accompanied your purchase. An annoying virus may cause your computer to operate slower than usual or may prevent certain files from working properly.

In some cases, software manufacturers create programs that have 'bugs' within the program. This is often called a virus, but should not be considered in the same manner as a typical computer virus. The reason is because a software manufacturer does not create these 'bugs' to intentionally hinder their customers and will generally work to replace the faulty program. In addition, a software glitch will not prevent your entire computer from operating or delete all of your files from the hard drive.

Common sense, along with an anti-virus program, will go a long way in both detecting and avoiding a computer virus. Without these important elements, your entire computer system and the information on it are at risk of infection.

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The author is a regular contributor to Adware Cop where more information about adware and viruses is available.