What are the 5 characteristics of computer viruses?

The five characteristics of computer viruses are: 1. Parasitism; computer viruses need to be parasitic in the host to survive, in order to better exert their functions and destroy the normal functions of the host. 2. Infectious; can invade computers through U disk, network and other channels. 3. Latent nature. 4. Concealment. 5. Destructive.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Computer virus (Computer Virus) is a set of computer instructions or program codes that the programmer inserts into a computer program to destroy computer functions or data. It can affect the use of the computer and can replicate itself.

Five characteristics of computer viruses:

1. Parasitism

Computer viruses also have parasitic characteristics. Computer viruses need to be parasitic in the host to survive, in order to better perform their functions and destroy the normal functions of the host. Usually, computer viruses are parasitic in other normal programs or data, and then use certain media to spread. During the actual operation of the host computer, once certain setting conditions are reached, the computer virus will be activated. When the program is started, the computer virus will continuously assist and modify the host computer files so that its destructive effect can be exerted.

2. Contagiousness

One of the major characteristics of computer viruses is that they are contagious and can invade computers through U disks, networks, etc. After an invasion, the virus can often spread and infect uninfected computers, causing widespread paralysis and other accidents. With the continuous development of network information technology, viruses can achieve a wide range of malicious intrusions in a short period of time. Therefore, in the security defense of computer viruses, how to deal with rapid virus infection has become an important basis for effective defense against viruses and the key to building a defense system.

3. Latent nature

Some viruses are like time bombs, and their timing is pre-designed. For example, the Black Friday virus cannot be detected until the scheduled time. When the conditions are right, it explodes and damages the system.

4. Concealment

Computer viruses are highly concealed. Some can be detected through virus software, some cannot be detected at all, and some appear and change from time to time. Impermanent, this type of virus is often difficult to deal with.

5. Destructiveness

After computer poisoning, normal programs may not be able to run, and files in the computer may be deleted or damaged to varying degrees.

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