a harmful computer program that can spread from one machine to another
■ For example:
- Most viruses are spread when sent as email attachments, and they’re activated when the recipient clicks on the program’s icon.
- If you want to avoid the hassle of dealing with computer viruses, get a Mac computer. Very few viruses target Macs.
■ Origin: These programs are called viruses because they act in ways very similar to biological viruses, in that they damage the host and they can spread from host to host.