What is a logic bomb?

A piece of code, usually disguised as something else, that causes a computer to behave in an unexpected and usually undesirable manner.

A form of Trojan horse malware that executes when it is triggered by a specific event

A harmful program that resides in the active memory of a computer and duplicates itself

A sophisticated threat that combines the features of a virus, worm, Trojan horse, and other malicious code into a single payload.