What is a notable effect of a Trojan on a compromised computer?

A Trojan is a type of malware that disguises itself as legitimate software to trick users into installing it. Once installed on a compromised computer, it can create significant damage and allow unauthorized access to sensitive data. The primary function of many Trojans is to steal sensitive data such as passwords, financial information, and personal identification details. Unlike some other types of malware, Trojans do not typically replicate themselves or directly infect other files with viruses; instead, they operate stealthily, often logging keystrokes or capturing screenshots to gather information without the user's knowledge. This characteristic makes stealing sensitive data the most notable and dangerous effect of a Trojan on a compromised computer.