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How is a worm different from a Trojan?

A. A worm reproduces itself on the same computer, whereas a Trojan attempts to spread through the network.

B. A worm gathers information and transmits to a server, whereas a Trojan hides and then spreads through a network.

C. A worm spreads through a network, whereas a Trojan hides inside another program.

D. A worm prevents a device from functioning until a ransom is paid, whereas a Trojan gathers information and transmits it to another device.

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Answer:

C. A worm spread through a network, whereas a trojan hides inside another program.

Explanation:

Worms spread through computer networks, a great example of a popular computer worm that struck the world is the "ILOVEYOU" / "Love Letter for You" worm. The malware infected over ten million personal computers and was spread via the user's email and sent to all addresses in the user's address book.

A trojan virus is essentially a piece of malicious software that looks legitimate from the outside but in under the seal it's highly malicious and destructive; hence how it got it's name "Trojan Horse" which is a reference to an Ancient Greek story of deception.

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