What is the principle of Trojan horse technology?

1, password sent to Trojan. Password sending Trojan can send all hidden passwords found by the victim to the designated mailbox without the victim's knowledge, so as to achieve the purpose of obtaining passwords. Most of these Trojans use port 25 to send e-mail.

2, keyboard recording Trojan. Keyboard recording Trojan is mainly used to record the keystrokes of the victims. This Trojan has two options, online and offline, to record the keystrokes of the other party when they hit the keyboard.

3. Destructive Trojan Horse. As the name implies, the only function of destructive Trojan is to destroy the infected computer file system and make it suffer huge losses from system crash or important data loss.

4. Act as a Trojan horse. The most important task of the proxy Trojan is to implant the proxy Trojan into the controlled "broiler" and turn it into a version of the attacker's attack. Through this Trojan horse, attackers can anonymously use Tenlet, ICO, IRC and other programs, thus hiding their footprints while invading and preventing others from discovering and their identity.