Work Systems Computer Virus

 

In general, computer viruses have a relatively similar way of working. Various skills by the virus of which can steal an information, check out and damage a file, reproduce, transmit themselves, to manipulate, hide and survive. In getting the information from a directory, the virus is to choose the files that can be infected. When users open a program or file that is infected by a virus, then that data needed by the virus created.
The virus is usually to collect data and store it in memory. When the computer is turned off, data will be lost. The data will be created again when the computer is turned on. Usually these data are stored as hidden files by virus. Prior to transmission, or spread, the virus will check the file to be host. It is not much different from the behavior of the virus in humans. Virus will give an indication on the file or program that has been infected, so it is easily recognizable by a computer virus, such as giving a byte or a date of manufacture is unique in every file that has been infected.
The multiplication process is carried out by the virus itself that occurs after the mark, followed by writing the object code of the virus in a file that has been examined. The multiplication process is performed by removing or changing the parent file. After that, creates a file that contains a virus program to use your real name or by riding on an infected file. Manipulate a file that is infected can be dangerous and can damage a computer. Manipulate the activity is usually aimed at popularizing the name of the virus.
Capabilities that are owned by a virus is hiding. In this way, the virus is stored in the form of machine code, DIGA bung with another program, and store it in the boot record or track on a disk. The program is made as short as possible, so that an infected file does not change size significantly. Like virus in medicine, computer viruses also has a life cycle that can be divided into four stages, as follows.
• The period of rest, the virus generally determine the date or time to stop and turn on a computer virus.• The time spread, usually a computer virus to replicate itself by replicating a program to a place of storage media, such as hard drives, RAM, and flash.• When active, at any given time the virus will activate itself.• Time of execution, meaning that viruses that have been active and began operating.