A Trojan horse
Meaning
Something that appears innocent or beneficial but is actually designed to infiltrate, deceive, or destroy from within.
Origin
The phrase "A Trojan horse" directly references one of the most famous acts of deception in ancient mythology, chronicled in Homer's The Odyssey. After ten grueling years of siege against the impenetrable city of Troy, the Achaeans, led by the ingenious Odysseus, pretended to withdraw, leaving behind a gigantic wooden horse as a supposed peace offering to the gods. The unsuspecting Trojans, overjoyed by their perceived victory, wheeled the monumental structure into their city walls. Yet, hidden within its hollow belly were elite Greek warriors. Under the cloak of night, these soldiers emerged, opened the city gates for the returning Achaean army, and brought about the catastrophic downfall of Troy, forever cementing the image of a harmless gift concealing a deadly enemy into our language.
Examples
- The new app seemed useful, but it was actually a Trojan horse for collecting users' personal data.
- The proposed budget amendment was criticized as a Trojan horse, intended to quietly introduce unpopular policies under the guise of fiscal reform.