How a Computer Virus Works
Anyone who has ever used a computer has more than likely run into some sort of problem. In some cases these problems are caused by what is known as a computer virus. When we hear the word virus, we usually think of some thing that makes us sick. If you have ever had a virus on your PC, you probably find the name virus quite appropriate. Believe it or not, a virus is just another type of software. They are what some call malicious software. Viruses are miniature programs that duplicate themselves and attach their replicas to other programs and documents. So where do viruses come from? Some people enjoy painting on paper and others enjoy painting on public and private structures. What does this have to do with computer viruses you ask? Just like graffiti is a destructive way for artists to show of their artistic talent, viruses are a destructive way for computer programmers to show of theirs.In order for a virus to take its malicious course, it first has to enter your computer. Because sharing of information is one of the many benefits of computer's, this is e
It does this by copying itself into as many files as it can find on the disk drive. Just owning the software is not enough. I hope this paper helped you understand how a computer virus works so you can protect yourself from this computer graffiti. There are many types of viruses because there are many designers. Many viruses contain what is called a payload. The entry of a virus into a PC is called the invasion. The payload is usually set to activate on a trigger. Each signature is a set of characteristic bytes particular to a virus. This computer saving software works by keeping a database of "signatures" of known viruses. We download them from the internet (network adapter cards); they attach themselves to other programs and documents. Because new viruses are created every day, it is important that when you purchase your anti-virus software that you also purchase the updates. Let's assume the virus is attached to an e-mail attachment. We pass them to other PC's through hard disks, floppy disks, compact disks, Zip disks, and Jazz disks (disk drives).
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