Trojan horse is a common type of computer virus. The name comes from the history of the Trojan War, in which the Greeks sent a large wooden horse filled with Greek soldiers into the city as a gift and then master the Trojans.

Trojan horse virus works on the same principle, disguised as a program that appears legitimate, only to trick users into installing them.

Here are the common types of attacks carried out by a Trojan horse:

Steal information

Some kind of Trojan horses  infect computers and steal valuable information such as bank accounts, credit card information, or other types of sensitive data. This type of Trojan horse virus type generally also has a key-logger that records every keystroke on the keyboard.