Computer virus is a malicious program that attaches itself to and infects other software applications and files without the user’s knowledge, disrupting computer operations. Viruses can carry what is known as a “payload,” executable scripts designed to damage, delete or steal information from a computer.
A virus is a self-replicating program, meaning it copies itself. Typically, a virus only infects a computer and begins replicating when the user executes the program or opens an “infected” file.
Viruses spread from computer to computer only when users unknowingly share “infected” files. For example, viruses are commonly spread when users send emails with infected documents attached.
Virus
