What is it?
A Trojan is a type of malware used to gain access to your systems and data. Users are typically tricked into loading and executing Trojans disguised as legitimate programs, although they can also be spread through viruses and worms. Once activated, they can spy on you, steal your data, and set up backdoor access to your system. One of the most prevalent is the Zeus banking Trojan and its many variants.
Some of the main purposes of Trojans include:
Backdoors, downloading of other files and programs, steal information, gain remote access, initiate ransomware, launch a Distributed Denial of Service (DDoS) attack.
However, the lines between malware types are becoming increasingly blurred and it is not uncommon for a piece of malware to begin as a Trojan and then demonstrate worming or virus capabilities.