A computer virus is a computer program that is designed to bring itself to stick to mingle with other programs that are in our computer to computer systems destroyed by vandalism, regardless of whether it is a set of instructions or data devices such as floppy disk, hard disk, computer memory and is a program that can spread from one computer to another computer through computer communications systems, for example, through data sheet (Diskette) fraetdaira or network information, which the computer virus hit play.To become corrupted. The information contained on the disk or the hard disk, or unwanted behavior, such as deleting files that are stored on the hard disk or reformat the hard disk, etc. However, the work of most viruses generally do not focus on the destruction, but it is a simple operation such as threatened, or to display a message to cause fear. It works only in the system's memory only. When using a computer, the next time the virus will work, and it will continue to spread to other programs with the program itself.
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