Trojan

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Trojan of or pertaining to ancient Troy.
Trojan Horse in classical Greek mythology, a hollow wooden statue of a horse in which the Greeks are said to have concealed themselves in order to enter and capture Troy; despite the warning of Laocoon, the Trojans breached the city walls to draw the horse inside, so that the Greeks were able the following night to overrun and sack the city.

Trojan Horse in figurative use denotes a person or thing intended secretly to undermine or bring about the downfall of an enemy or opponent; in computing, it is a program designed to breach the security of a computer system while ostensibly performing some innocuous function.
Trojan War the legendary ten-year siege of Troy by a coalition of Greeks led by Agamemnon, described in Homer's Iliad. The Greeks were attempting to recover Helen, wife of Menelaus, who had been abducted by the Trojan prince Paris. The war ended with the capture of the city by a trick: the Greeks ostensibly ended the siege but left behind a group of men concealed in a hollow wooden horse (the Trojan Horse).

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