Question

an unauthorized program typically contained within a legitimate program is known as a:
sparta.
worm.
macro.
trojan.

Explanation:

A Trojan is an unauthorized program hidden within a legitimate - looking program. Worms are self - replicating and don't need to be in a legitimate program. Macros are sequences of commands in software applications. "Sparta" is not related in this context.

Answer:

D. Trojan.