A computer virus is a type of malware that can replicate itself on your computer and spread to other devices. You might be infected with a virus if your computer suddenly starts running more slowly, ...

A computer virus that rewrites the executable file it targets rather than attaching itself to the file and running along with it. See virus. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other ...

A computer virus in the DOS/Windows environment that takes advantage of the fact that .COM and .EXE are two valid executable extensions for program files, and .COM takes precedence. For example, if ...