How a Computer Virus Works?
December 24, 2007 – 5:16 pmA computer virus is a small software program designed to hamper a PC’s efficiency without the user’s knowledge or permission. The mechanism of a computer virus can undoubtedly be compared with working of a biological virus. Both of them more or less work in a similar way but follow different analogy.
Unlike the computer virus, a biological virus is a fragment of genetic code, DNA, which breathes inside a human body and infects living cell by spreading rogue DNA into the cell environment. The viral DNA keeps replicating itself in the cell’s existing machinery.
Likewise, the computer virus seeks for a host i.e. any program or document to infect a machine and replicates itself each time a user opens the program. When the user opens an infected program, the virus loads itself into the computer’s memory and searches for another host to reproduce, thereby creating a vicious circle for itself.
Several viruses were originally designed to infect the boot sector, the part of the operating system that loads at the time you switch on your computer. The boot sector helps the computer in loading the operating system. By putting code in the boot sector, the virus is active every time the user switches on the computer.
General modes of computer virus transmission are infected floppy discs or documents uploaded to bulletin boards. All viruses have a sole aim to ruin computers’ functionality which is the main part of the attack phase. When the virus is being activated, a small program is opened to perform a task. It can be an attractive message on the user’s screen or it may attempt at deleting all the data present on your hard drive.
Immediate computer virus repair is must to avoid damage to computers. There are some terrible viruses that are always ready to scour the network’s functionality, thereby making it crucial to avail virus support. Nowadays, technical support services have become the next big thing with the arrival of names like IBM, Dell, iYogi, and Circuit City.
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