1) A Trojan horse is a type of malicious software that appears legitimate but can take control of a computer. It tricks users into installing it, after which it can steal data, disrupt systems, or perform other harmful actions.
2) There are different types of Trojans, including remote access Trojans, data-sending Trojans, and destructive Trojans. Common Trojan malware includes downloaders, game thieves, infostealers, and SMS Trojans.
3) Signs of a Trojan infection include slow performance, blue screens, strange pop-ups, and security software being disabled. Basic protections include using antivirus software, updating systems, and avoiding downloading untrusted files