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Trojan horses

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Trojan horse

–noun
1. Classical Mythology. a gigantic hollow wooden horse, left by the Greeks upon their pretended abandonment of the siege of Troy. The Trojans took it into Troy and Greek soldiers concealed in the horse opened the gates to the Greek army at night and conquered the city.
2. a person or thing intended to undermine or destroy from within.
3. a nonreplicating computer program planted illegally in another program to do damage locally when the software is activated.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Cultural Dictionary

Trojan Horse

In classical mythology, a large, hollow horse made of wood used by the Greeks to win the Trojan War. The resourceful Odysseus had come up with the plan for the horse. The Greeks hid soldiers inside it and left it outside the gates of Troy. They anchored their ships just out of sight of Troy and left a man behind to say that the goddess Athena would be pleased if the Trojans brought the horse inside the city and honored it. The Trojans took the bait, against the advice of Cassandra and Laocoon. That night the Greek army returned to Troy. The men inside the horse emerged and opened the city gates for their companions. The Greeks sacked the city, thus winning the war.

Note: The story of the Trojan horse is the source of the saying “Beware of Greeks bearing gifts.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang Dictionary
trojan horse

  1. n.
    a kind of malicious software that arrives at a personal computer embedded in some other software and then introduces routines that can gather personal information or destroy the operationality of the computer. : The consultant called the intruder a “trojan horse” and said I needed yet another program to get rid of it.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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