a subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst
a program that appears desirable but actually contains something harmful;
"the contents of a trojan can be a virus or a worm"
"when he downloaded the free game it turned out to be a trojan horse"
a large hollow wooden figure of a horse (filled with Greek soldiers) left by the Greeks outside Troy during the Trojan War
- The contents of a trojan can be a virus or a worm.
- This software is supposed to be a defense against Trojan horses, worms, and other types of viruses.