Trojan horse

Definition

A subversive person or device placed within the ranks of the enemy.

Example Sentences

• "Worse than what could be observed about the program was the fear that it might be a Trojan horse program -- apparently innocent, but carrying a string of code instructing the computer to carry out a specific damaging instruction at some later time."
• "Russia thinks of an atomic authority as a Trojan horse to get behind the iron curtain and impair her defense, and there is some reason historically for this view."
• "Seen like this, huge western companies function like a Trojan horse when they are invited inside the boundaries of LDCs."