Viruses, worms and Trojan horses - what are they?

Viruses, worms and Trajan horses (or trojans) are malicious files on your computer that could spread throughout your computer, and via the internet by the computers of your family and friends. If you are not useless by just browsing, you run little risk in such files. This article gives you information about viruses, worms and trojans.

What is a virus?
A computer virus is a program that is committed to create a file in this way can spread themselves. Viruses are designed to corrupt certain files on your computer. Viruses can also easily pass from one computer to another by simply mails or distribute Messenger messages.

Viruses can vary in severity. Some viruses simply make for a slow computer, slow internet, they are just tricky. So, it if better to know how to fix a slow computer and speed up computer performance. But there are other serious viruses, they can destroy your computer throughout. It may even be so serious that your PC is no longer useful. Fortunately, large viruses not easily dispersible, man should (unconscious) between the opportunity to continue to help spread. Online virus information comes handy to resolve many issues related to virus.

What are worms?
Worms are similar to viruses, but they are serious. A virus can not spread, a worm, can do it. First worm takes a hold of the functions on the computer information or files are sent. Once in your PC is automatically disseminate by e-mails to all your contacts. Because worms from spreading through a program or file as "hosts", they can also set your system to make someone else the opportunity to remotely control your computer.

What is a Trojan horse?
Just like the real Trojan horse, which first seemed to give the enemy but it was full to sit with Greek soldiers who want to conquer the lot, so today's Trojan horses are programs that appear to be useful but very harmful codes. Trojan horses can be easily e-mail sent, sometimes as an update file sometimes something else.

Trojan horses can be spread by mail, but also the free software you can download from untrusted sites. So caution is the message.

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