Trojan horse
- Gr. Legend in the Trojan War, a huge, hollow wooden horse with Greek soldiers hidden inside that is left at the gates of Troy: the Trojans bring it into the city, thinking it a gift, and the soldiers creep out and open the gates to the rest of the Greek army, which destroys the city
- any person, group, or thing that seeks to subvert a nation, organization, etc. from within
See Trojan horse in American Heritage Dictionary 4
noun- A subversive group or device placed within enemy ranks.
- The hollow wooden horse in which, according to legend, Greeks hid and gained entrance to Troy, later opening the gates to their army.
- Computer Science A program that appears to be legitimate but is designed to have destructive effects, as to data residing in the computer onto which the program was loaded.
Learn more about Trojan horse