Malicious Trojan Horse Programs
When the original Trojan Horse was gifted by the Greeks to the Trojans, it was accepted as a peace offering and taken into the city without a second thought. But, in the middle of the night, the Greek army hidden inside it attacked the unsuspecting Trojans and destroyed the city. Similar to the method used in this snippet of ancient history, the technological Trojan acts to destroy files in a computer after getting into it through seemingly harmless means.