Why rootkit is the most hazardous into your PC?

A rootkit is considered one of the most hazardous types of malware because it grants attackers deep, often undetectable access to a computer system. It can modify the operating system and hide its presence, allowing cybercriminals to steal sensitive information, install additional malware, or control the system remotely without the user's knowledge. This stealthy nature makes rootkits particularly difficult to detect and remove, posing a significant threat to user privacy and security. Furthermore, their ability to maintain persistent access can lead to long-term compromises of the affected systems.