What is a Trojan?
A Trojan is a type of program that hides its identity behind something more useful. There are prominently two types of Trojans we see today. The stand-alone, and the modified. The stand-alone is a program that claims to be a tool, yet in reality, is a program that is used to steal personal information, and makes your computer a zombie to the hacker. However, this type of Trojan relies on a good deal of social engineering and code difficulty as to not alert the user to it running.
The other type, a modified program with the malicious code inside can take over a computer without the user even knowing anything was wrong. This would be like opening a program and allowing the code to execute in the background, highjacking all of your data.
What Do They Do?
A Trojan is different from a virus. A virus makes copies of itself, and manipulates the computer they reside on. A Trojan is more of a form of spyware. It monitors the computer for personal information which it steals to be traded on the black market.
Other functions of Trojans include:
- Download other maleware
- Create a "back-door" into your computer allowing hackers to infiltrate your computer
- Record what you type, usernames, passwords, credit cards, emails, and any other information that may be personal or vital that the hacker can use.