What are the main sources of computer viruses?

Sources of computer viruses:

1. Common viruses: U disk, email attachments, file sharing, etc., which are infected after being opened;

2. Worms Virus: transmitted through network and system vulnerabilities;

3. Trojan virus: disguised as a game or commonly used software.

is a program that is artificially created, destructive, contagious and latent, and can cause damage to computer information or systems. It does not exist independently, but is hidden in other executable programs.

After a virus enters the computer, it will affect the running speed of the machine at first, or crash and destroy the system at worst; therefore, the virus brings great losses to the user. Under normal circumstances, we call this destructive program computer virus.

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