Trojan horse
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Trojan horse

noun

Definition of TROJAN HORSE

1
: someone or something intended to defeat or subvert from within usually by deceptive means
2
: a seemingly useful computer program that contains concealed instructions which when activated perform an illicit or malicious action (as destroying data files); also : the concealed instructions of such a program — compare virus

Examples of TROJAN HORSE

  1. They may be using the other corporation as a Trojan horse.

Origin of TROJAN HORSE

from the large hollow wooden horse filled with Greek soldiers and introduced within the walls of Troy by a stratagem
First Known Use: 1837

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