The Criteria Of A Computer Virus
Like any other computer program, a computer Virus is a computer program. It's just that there are fundamental differences between the computer virus with other computer programs. A computer Virus is a program that has a wide range of capabilities to be able to infect other programs.
The term "virus" was first used by Fred Cohen in 1984. The term is used because this computer virus programs have similarities to the virus used in the medical term. Yes, komputersengaja created a virus to infiltrate the other programs, infect, alter, memanipulasinya, even to ruin it.
A program called "decent" or categorized as viruses if at least five the following criteria.
1. the Virus is able to obtain information
A virus will take a list of files contained in a directory to identify the program that he would, for example the file tulari has the extension *. doc.
A macro virus that have recognized this file will be trying out a new file to create a list of all the files. After the list of new files in the form of the virus file already created, usually the original files will be deleted or hidden viruses.
2. the Virus is able to Check a Program
A virus must have the ability to check a program . The Virus should be able to ensure that the file has not been chosen at all, because no good infection from infecting a file or program that has been contracted.
To that end, the virus usually identifies a program that has been contracted to provide a unique byte size. Usually just gave him a 1 KB size only.
3. the Virus is able to Multiply
This is a must-have capability of a virus. Because after all, the core of a virus is its ability to reproduce themselves. How does the virus to multiply is to remove the files that have been selected, and then create a copy-annya with the same name, but it has a virus.
Well, computer users who do not know that the file is a virus, not impossible would open or execute the file. When this is the ability of viruses to executions on multiply will be used. The Virus will infect other programs or infect the directory with a virus that is being executed.
4. Virus capable of Manipulation
After a virus infecting a program or file, usually a Routine (Routine) that a virus will be executed. Usually the contents of this routine is very diverse, ranging from the simplest, to the complex was capable of damaging the computer performance. Most of the contents of the Routine that is used to manipulate the virus program and it's no uncommon to popularize the name of the maker
This routine will damage and manipulate the ability of an operating system so that it will have the same capabilities to the operating system that has been ditularinya. Some things are wont to do this routine is as follows.
Manipulate the program or messages on the monitor program or file work change printer, change the label of each file, directory, or the label of the drive on a pc.5. the Virus is able to hide away
Ability to hide this absolute must-have yourself a virus so that all plans penginfeksian a program from start to finish can run smoothly and not known to the user's computer. This ability was shown the virus in the following way.
The original Program or virus is stored in the form of machine code and merged with other programs that are considered useful by users.Virus programs put on a rarely used Recordatautrack Boot Virus does not change the description of the time a virus is made as short as possible fileProgram, and the results of infection does not change the file size.
