Trojan horse noun
plural ∼ horses [count] 1 : someone or something that is used to hide what is true or real in order to trick or harm an enemy
▪ They may be using the other corporation as a Trojan horse. 2 computers : a seemingly useful computer program that is actually designed to harm your computer (such as by destroying data files) if you use it
▪ They may be using the other corporation as a Trojan horse.
