How does a computer virus work?
Computer viruses are mysterious and grab our attention. On the one hand, viruses show us how vulnerable we are. A properly engineered virus can have an amazing effect on the worldwide Internet. On the other hand, they show how sophisticated and interconnected human beings have become.
When you listen to the news, you hear about many different forms of electronic infection. The most common are:
Viruses - A virus is a small piece of software that piggybacks on real programs. For example, a virus might attach itself to a program such as a spreadsheet program. Each time the spreadsheet program runs, the virus runs, too, and it has the chance to reproduce (by attaching to other programs).
E-mail viruses - An e-mail virus moves around in e-mail messages and usually replicates itself by automatically mailing itself to dozens of people in the victim's e-mail address book.
Worms - A worm is a small piece of software that uses computer networks and security holes to replicate itself. A copy of the worm scans the network for another machine that has a specific security hole. It copies itself to the new machine using the security hole, and then starts replicating from there, as well.
Trojan horses - A Trojan horse is simply a computer program. The program claims to do one thing (it may claim to be a game) but instead does damage when you run it (it may erase your HDD). Trojan horses have no way to replicate automatically.
Source(Which the first author forgot to recognize): http://www.howstuffworks.com/virus.htm
This is the anti-virus work [ anti virus program ] What you just have to do is : Make sure your anti virus is working good Make sure you have a good anti virus scan every while see the results and do not go to bad websites [ work with your anti virus ] that for preparing , but if the virus is on your computer ; scan your computer if the anti virus doesn't…
A virA virus is a program that can "infect" other programs by modifying them. Modification includes a copy of the virus program, which may infect other programs. Computer virus has similarity with biological virus, a biological virus infects the machinery responsible for the living cell to work and a computer virus carries in its instructional code the recipe for making perfect copies of it. us is a program that can "infect" other programs by modifying…
Virus on your computer and nothing will run The virus is trying to get you to disable antivirus software What should you do?
Because it makes the computer "sick" and not working right. And computer viruses spread, so it's like another word for saying a computer is "sick" and not working right. Viruses can spread computer to computer electronically kind of like how human viruses spread person to person. That's because a computer virus can spread from computer to computer, and it basically makes the affected computers 'sick'. They don't work as well as they did without the…
A computer virus 'infects' a computer in much the same way as a biological virus infects a person. It's usually programmed to duplicate itself (in the same way a biological virus divides and multiplies) - thus filling the computer's hard drive with masses of useless information, so the legitimate programs have no space to work. It's also programmed to 'jump' from one computer to another (just as one person can catch a virus from another)
Anti-virus software are programs that run on your computer. At any one time there are lots of programs running on your computer. The more that are running, the slower the computer can work. So when you install a new program like anti-virus software, it is an extra program to run which will make your computer slower. It is still important that you do use anti-virus software, even if it does slow down your computer.
When you download limewire it doesn't give you a virus. Each song you download holds a virus. The longer you have the song, the bigger the virus gets. Later the virus will get so big that your computer won't work. The above answer is wrong. Downloading Limewire will not give you a virus, nor will the songs it has. As long as you have good protection on your computer, it will be fine.