If you are a frequent user of Internet, there is a big chance that your computer will be infected with a virus. These viruses can infect your computer every time you download applications, programs, videos and music from the Internet. The best way to protect your computer is through installing a good anti-virus. However, you must have to get some ideas of the most widespread viruses on computers.

1.    Encrypted Viruses – Considered as the most difficult to detect and to stop. It can be downloaded accidentally without your knowledge and can infect your computer instantly. It uses unusual form of encryption and decrypts itself for worse cases.
2.    Secret Viruses – This kind of virus can change the files on your computer and it can even replace them. There are advanced anti-virus that can help stop virus before it can damage your computer.
3.    Time Delay Viruses – This kind of virus does not immediately cause harm on your computer. Instead, it works by slowly infecting your files one at a time. You may not have noticed the virus instantly the minute you have downloaded them since they wait before they infect. It is best that you should run an anti-virus weekly to prevent virus from penetrating into your computer.
4.    The Anti-Virus Virus – You should be aware that there are viruses that infect the anti-virus installed on your computer. The virus works by disabling the anti-virus so that viruses can still be downloaded on your computer.
5.    The Multi-Headed Virus – Considered as the most despicable form of bug in the Internet. The virus can attach into your .exe files and also affect the booting system that makes you download them every time you start up your computer.
6.    The Misdirection Virus – This virus can be scary for your computer because it has a built in subprogram that gives false readings to your anti-virus software.
7.    A Cloning Virus – This virus duplicates all your .exe files. Once you click the file, you are not actually clicking the file but clicking the file that has been infected.
8.    The Author Virus – The virus search for .exe file and deletes it. It will then alter the code to change the program.
9.    The Bad Penny Virus – A bug that involuntarily passes itself to the Internet or those who are working online.
10.    Rewriting Virus – A kind of virus that automatically rewrites all your files on your computer. It also fills up all the hard disk drives with lots of invisible and unnecessary files.

Computer virus can penetrate into your computer depending on the type of virus. Actually, viruses have its own specific features and have a unique way in infecting the computer system. These viruses can cause harm and can even damage the entire system if there is no prevention taken for your computer.

Since virus can infect your computer, you must have to know the different types of viruses. Getting to know them will help you on how to get rid of them and on how to best protect your computer. Aside from this, since there are too many viruses lurking in the Internet nowadays, you must know the symptoms and must know how to diagnose each virus that will infect your computer. Here are some of the most common type of computer viruses to help you identify. more »

Everyone is aware of the fact that making a virus is not something morally good. It is considered as an evil task because it is used to destroy the computer files and data. It illegally captures the private information about the computer user. This private information can be the login id and passwords of the email or other online accounts. Sometimes the virus is also able to take hold of the bank accounts and steal the money. The outcomes of the viruses running inside a computer can even be minute or very large. Some viruses only annoy the computer users, some display funny images and some other cause serious destructions. The objectives of the virus can vary but every virus is considered bad. The people who make these viruses are regarded as criminals. If the person or a group of persons is found guilty for making computer virus, the punishment is given to them. Different countries and governments have designed different rules for punishing the virus makers. The extent of these punishments also depends upon the amount of damage produced by a computer virus or worm. more »

Computer virus is a new term and this term is introduced in the last few years but the real history of computer virus is based on the complications and problems which have been faced throughout the years. The history of computer viruses is very long. There was a theory named complicated automata which was introduced in 1949 by a professional lecturer of a highly recognized university. This theory was later again introduced in different format in 1970s. According to this theory, computer has the ability to perform some tasks repeatedly. This theory explained the impact of viruses and their effects on computers when they have the ability to perform specified tasks again and again.

The very first virus which was being introduced in computers was named as creeper. This virus was the very first computer related virus and it was detected on ARPANET. This virus was using ARPANET to damage a special computer named as PDP-10. This computer was based on a unique operating system which was known as TENEX. The virus was able to generate a systematic message for remote access through ARPANET. The message which was displayed on the screen was I am creeper and if you have the ability to catch me then catch. It was a strange virus and this virus was killed with another program which was later named as reappear. The very first single computer virus was detected in a computer which was using operating system named Apple DOS 3.3. more »