The term "Trojan Horse" originates from a story in Greek mythology where the Greeks used a deceptive wooden horse to infiltrate the city of Troy. They hid soldiers inside the horse, presenting it as a gift to the Trojans. Once the horse was brought into the city, the soldiers emerged at night, leading to the fall of Troy. In modern contexts, a "Trojan Horse" refers to any deceptive tactic used to gain access to a secure system or area. In cybersecurity, for example, a Trojan horse is a type of malware disguised as legitimate software, tricking users into installing it and compromising their systems.