trojan horse

A Trojan horse is a deceptive scheme or object that appears harmless but contains hidden danger, named after the famous wooden horse in Greek mythology. The story claims Greek soldiers hid inside a massive wooden horse, which Trojan soldiers rolled into their city believing it was a gift or religious offering. Once inside Troy's walls, the Greeks emerged and destroyed the city. The story of Troy illustrates how trust and deception can determine the fate of entire civilizations. In modern usage, the term applies to computer viruses disguised as legitimate software, infiltrating systems and stealing data. The brilliance of the Trojan horse concept is that it weaponizes trust—you let it in willingly because you believe it's safe. This makes it more dangerous than frontal attacks. The phrase has become metaphorical currency in discussions of cybersecurity, diplomacy, and business strategy.