Classification of computer virus transmission media

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.

In order to understand and prevent computer viruses more clearly, we classify them according to the type of media they are attached to:

1) Network virus: a computer virus that infects executable files through the computer network (Recommended learning: web front-end video tutorial)

2) File virus: a virus that mainly attacks files in the computer

3) Boot virus: It is a virus that mainly infects drive sectors and hard disk system boot sectors

In addition, computer viruses can also be classified based on computer-specific algorithms, mainly Virus types are:

1) Incidental virus: Usually attached to an EXE file, its name is the same as the EXE file name, but the extension is different. Generally, it will not damage the file itself, but it will This type of virus is the first to be activated when DOS is read.

2) Worm virus: It will not damage computer files and data. Its destructiveness mainly depends on the deployment of the computer network. The computer network can be used to switch from one computer storage to another to calculate the network address. to contract the virus.

3) Variable virus: It can apply complex algorithms on its own and is difficult to detect because the content and length expressed in another place are different.

Computer viruses are recognized as the number one enemy of data security. Since 1987, computer viruses have received widespread attention around the world. Computer viruses were first discovered in my country in 1989.

Currently, new viruses are developing in directions that are more destructive, more secretive, have a higher infection rate, and spread faster. Therefore, it is necessary to learn the basic knowledge of computer viruses in depth and strengthen the prevention of computer viruses.

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