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The purpose of this article is to share with you about whether a computer virus refers to a program that cannot be run in the computer. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

A computer virus does not mean that there are programs that cannot be run in the computer, but refers to the code inserted by the programmer in the computer program that destroys the function or data of the computer and can affect the use of the computer. a set of computer instructions or program code that can be copied by itself.

Computer virus (Computer Virus) is a group of computer instructions or program codes that programmers insert into computer programs that destroy computer functions or data, can affect the use of the computer, and can copy themselves.

Computer viruses are contagious, concealed, infectious, latent, excitable, expressive or destructive. The life cycle of computer virus: development period, → infection period, → incubation period, → attack period, → discovery period, → digestion stage, → extinction period.

Brief introduction

Computer viruses are artificial, destructive, contagious and latent programs that destroy computer information or systems. It does not exist independently, but is hidden in other executable programs. After the virus in the computer, the light will affect the running speed of the machine, and if it is serious, the crash system will be destroyed; therefore, the virus will bring great losses to users. Usually, we call this destructive program a computer virus.

According to the existing media classification, computer viruses can be divided into three types: guided virus, file virus and mixed virus; according to the link mode, they can be divided into three types: source virus, embedded virus and operating system virus; according to the system classification of computer virus attack, it can be divided into attack DOS system virus, attack Windows system virus, attack UNIX system virus. Today's computer viruses are constantly pushing through the old and bringing forth the new, including some unique new viruses that are temporarily unable to be classified according to conventional types, such as Internet viruses (spread through the Internet, some carry more and more virus data), e-mail viruses and so on.

Computer virus is recognized as the number one enemy of data security. Since 1987, computer virus has been paid more and more attention all over the world. Computer virus was first discovered in China in 1989. At present, the new virus is developing in the direction of more destructive, more secret, higher infection rate, faster spread speed and so on. Therefore, we must deeply study the basic knowledge of computer viruses and strengthen the prevention of computer viruses.

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