Final answer:
A worm is a type of malware that makes copies of itself to spread inside a computer system without permission or knowledge. Unlike viruses, worms do not need a host file to spread and can self-replicate.
Step-by-step explanation:
Malware that makes copies of itself to spread inside a computer system without your knowledge or permission is a worm. Worms are a type of malware that replicate themselves across a network, infecting other computers and devices. Unlike viruses, worms do not need a host file to spread and can self-replicate.
Learn more about Worms