Tech story: The Trojan horse

In the context of computing and software, a Trojan horse, or simply trojan, is a piece of software which appears to perform a certain action but in fact performs another such as a computer virus. Contrary to popular belief, this action, usually encoded in a hidden payload, may or may not be actually malicious, but Trojan horses are notorious today for their use in the installation of backdoor programs. Simply put, a Trojan horse is not a computer virus in most cases. Unlike such malware, it does not propagate by self-replication but relies heavily on the exploitation of an end-user (see Social engineering). It is instead a categorical attribute which can encompass many different forms of codes. Therefore, a computer worm or virus may be a Trojan horse. The term is derived from the classical story of the Trojan Horse.

Story of the Trojan horse

In the context of computing and software, a Trojan horse, or simply trojan, is a piece of software which appears to perform a certain action but in fact performs another such as a computer virus. Contrary to popular belief, this action, usually encoded in a hidden payload, may or may not be actually malicious, but Trojan horses are notorious today for their use in the installation of backdoor programs. Simply put, a Trojan horse is not a computer virus in most cases. Unlike such malware, it does not propagate by self-replication but relies heavily on the exploitation of an end-user (see Social engineering). It is instead a categorical attribute which can encompass many different forms of codes. Therefore, a computer worm or virus may be a Trojan horse. The term is derived from the classical story of the Trojan Horse.

The end of the Trojan war came with one final plan. Odysseus devised a new ruse—a giant hollow wooden horse, an animal that was sacred to the Trojans. It was built by Epeius and guided by Athena, from the wood of a cornel tree grove sacred to Apollo, with the inscription:

The Greeks dedicate this thank-offering to Athena for their return home.

The hollow horse was filled with soldiers led by Odysseus. The rest of the army burned the camp and sailed for Tenedos.

When the Trojans discovered that the Greeks were gone, believing the war was over, they "joyfully dragged the horse inside the city", while they debated what to do with it. Some thought they ought to hurl it down from the rocks, others thought they should burn it, while others said they ought to dedicate it to Athena.

Both Cassandra and Laocoön warned against keeping the horse. While Cassandra had been given the gift of prophecy by Apollo, she was also cursed by Apollo to never be believed. Serpents then came out of the sea and devoured either Laocoön and one of his two sons, Laocoön and both his sons, or only his sons, a portent which so alarmed the followers of Aeneas that they withdrew to Ida.The Trojans decided to keep the horse and turned to a night of mad revelry and celebration. Sinon, an Achaean spy, signaled the fleet stationed at Tenedos when "it was midnight and the clear moon was rising" and the soldiers from inside the horse emerged and killed the guards and finally TROY was ruined by the GREEKS.

This story clearly shows how the TROJAN virus affects your system.


Source: Wikipedia