What was the world's first computer virus?

The C-BRAIN virus was written in 1987 by a pair of Pakistani brothers Basit and Amjad.

The main purpose is to prevent software from being copied at will.

As long as someone pirates the software, C-BRAIN will occur and "eat" the remaining hard disk space of the pirate.

Generally speaking, the industry agrees that this is the true ancestor of computer viruses with complete characteristics.

Extended information: Computer viruses are classified according to the type of media they are attached to: 1. Network viruses: computer viruses that infect executable files through computer networks; 2. File viruses: viruses that mainly attack files in the computer; 3. Boot viruses: are

A virus that mainly infects drive sectors and boot sectors of hard disk systems.

Computer viruses are classified based on computer-specific algorithms. The main 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 or change the file itself.

, but 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 infect the virus.

3. Variable viruses: They can apply complex algorithms on their own and are difficult to detect because the content and length expressed in another place are different.