Trojan

(redirected from Trojan Virus)
Also found in: Dictionary, Thesaurus, Medical.

Trojan

1. a native or inhabitant of ancient Troy
2. of or relating to ancient Troy or its inhabitants
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Trojan

A program that appears legitimate but performs some illicit activity when run. It may be used to locate password information or make the system more vulnerable to future entry or simply destroy the user's stored software and data. A Trojan is similar to a virus, except that it does not replicate itself. Often sneaking in attached to a free game or other supposedly worthwhile utility, the Trojan remains in the computer doing damage or allowing someone from a remote location to take control. See Trojan dropper, wiretap Trojan, rootkit, RAT, Back Orifice, NetBus, PrettyPark, Talking Trojan and virus.

The Trojan Horse
The term comes from Greek mythology, in which the Greeks battled the Trojans (people of Troy) in the 12th century BC. After years of being unable to break into the fortified city, the Greeks built a wooden horse, filled it with soldiers and pretended to sail away. After the Trojans brought the horse into the city, the Greek soldiers crept out at night, opened the gates of Troy to the returning soldiers, and Troy was destroyed.


The Trojan Horse
This is a scene from the 2004 movie "Troy," starring Brad Pitt, Eric Bana and Orlando Bloom. The movie was a huge success. (Image courtesy of Radiant Productions and Plan B Entertainment.)
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
In this way the program can indicate the presence of a Trojan virus, spyware, or adware, the company claims.
Sandra says there are only two ways to fall foul of the phishers - by going for a scam that asks for your financial details or by downloading a Trojan virus, which gives them access to your information.
In addition to Outpost Personal Firewall Pro 2.0, Agnitum also offers Tauscan, a powerful Trojan virus detection and removal application.
Another recent victim was Microsoft, where staff allegedly had their passwords stolen after a trojan virus infection.
In 2018, 3,325 US IP addresses with the Trojan virus infected 3,607 Chinese websites, an increase of 43 percent compared with 2017, CNCERT added.
The ISF also clarified that the mere receipt of the phone call does not necessarily lead to the introduction of the malicious program "Trojan Virus" to the receiving cellular device.