A Trojan is malicious software that usually needs to be launched by the user or another malicious program. Trojans basic mission is to mislead people of its real goal. Trojans have evolved into different complex forms like backdoors (that can manage distant computers) and downloaders (that are that can download and install other malicious programs) These are the types that you need to be aware of: ArcBombs. Backdoors allow criminals to control computers remotely. Clickers can also help attackers install and launch third-party code on the victim’s device, record keystrokes.”]
Source: https://www.csoonline.com/article/3602790/17-types-of-trojans-and-how-to-defend-against-them.html