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The Trojan Horse in Homer's Iliad was a large wooden horse left as a gift outside the barred gates of the city of Troy; soldiers were hidden inside the horse. The people of Troy saw it as a gift and took it inside their city, At night, the soldiers came out of the horse, opened the gate, and let the enemy army in to invade the city.

Similarly, a Trojan Horse or Trojan virus is a program or file (like a game) we might want on our computer. It is downloaded, installed and run. The program may do as expected, or not, but it will also embed itself as maleware doing things on the computer we would not want.

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8y ago

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