What is a computer virus and how does it work? A computer virus is a self-replicating code which copies itself to another program, computer boot sector or document and corrupts or damages that program, boot sector or document. The term “virus” is also commonly, but inaccurately, used to refer to other types of malware, including adware and spyware programs that do not have the ability to self-replicate. How do computer viruses work? Once a virus … Continue reading computer viruses