A Trojan horse (or Trojan) is one of the most common and dangerous types of threats that can infect your computer or mobile device. Trojans are usually disguised as benign or useful software that you download from the Internet, but they actually carry malicious code designed to do harm—thus their name.
There are a variety of types of Trojans, many of which can launch sophisticated and clever attacks. some types to be aware of are Password-stealing Trojans, Remote access Trojans, Destructive Trojans, and Antivirus killers.
A Trojan can have one or multiple destructive uses—that is what makes them so dangerous. It’s also important to realize that unlike viruses, Trojans are not self-replicating and are only spread by users who mistakenly download them, usually from an email attachment or by visiting an infected site.