What are the three types of computer viruses

Computer viruses can be classified into three types: network viruses, file viruses, and boot viruses according to the types of media attached to them; according to computer specific algorithms, they can be classified into three types: incidental viruses, worms, and variable viruses.



Computer virus classification:

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1. Classified according to the type of media attached

(1) Network virus: Computer virus that infects executable files through a computer network.

(2) File virus: Mainly attack the file virus in the computer.

(3) Boot-type virus: It is a virus that mainly attacks the drive sector and the boot sector of the hard disk system.

2. Classified according to computer specific algorithm

(1) Incidental virus: usually attached to an EXE file, its name is the same as the EXE file name, but the extension is different, and generally does not damage the file itself, but when read by DOS It is this type of virus that is activated first.

(2) Worm virus: It does not damage computer files and data. Its destructiveness mainly depends on the deployment of computer networks. You can use the computer network to switch from one computer storage to another to calculate the network address to infect the virus.

(3) Variable viruses: Complex algorithms can be applied on their own, which is difficult to find because the content and length of the manifestation in another place are different.