Which type of malware provides remote control of a victim's computer?

Remote Access Trojans (RATs) are a specific type of malware that is designed to provide an attacker with remote control over a victim's computer. Once a RAT is installed on a system, it can allow the attacker to execute commands, access files, log keystrokes, and even take control of the camera or microphone. This makes them extremely dangerous, as they can be used for a wide range of malicious activities, including stealing sensitive information and surveilling the victim without their consent.

RATs often disguise themselves as legitimate software or disguise their presence, making them harder to detect. They exploit vulnerabilities in software or rely on social engineering techniques to convince users to install them.

In contrast, adware typically serves advertisements on the victim's machine, worms replicate themselves and spread across networks without user intervention, and grayware refers to software that may not be malicious but can be unwanted or annoying. Each of these has different functionality and impact, highlighting why the focus on Remote Access Trojans as the correct answer is justified based on their specific ability to provide remote control.