"Trojan Horse" (Trojan horse) abbreviation "Trojan", it is said that this name originates from the Greek mythology "the Trojan Massacre". The armies of ancient Greece besieged the city of Troy for a long time. So someone suggestions to make a big horse, pretending to fight horse God, let soldiers hiding in a huge trojan, large forces pretend to retreat and will Trojan abandoned in Troy under the city. The city after the news of the rescue, hence the "Trojan" as a singular booty dragged into the city, the whole town drinking spree. By midnight, the whole city to sleep, hide in the Trojan in the soldiers opened the secret Men, open the gate and arson, outside the city ambush influx, troops liyingwaige, burning the city of Troy. Later generations called the Trojan a "Trojan horse." Now the hacker program borrows its name, there is "once sneak, endless" meaning.
The complete Trojan program generally consists of two parts: one is the server program, the other is the controller program. "In the Trojan" refers to the installation of the Trojan server program, if your computer is installed with the server program, then the person who owns the controller program can control your computer through the network, do whatever you want, then the various files, programs on your computer, and the account number and password that you use on your computer will not be safe.
Trojan Horse program can not be regarded as a virus, but more and more new version of anti-virus software, has begun to kill some Trojans, so there are a lot of personal Trojan program for hacker virus.