Overview
Rootkits are among the most difficult types of malware to detect and remove because they operate at a deep level within the operating system (often the kernel). They can hide files, network connections, and even themselves from security tools.
Purpose
- Maintaining persistent, hidden access to a compromised system.
- Stealing sensitive data.
- Using the system as part of a botnet.
Detection and Removal
Often requires specialized tools or even a complete reinstallation of the operating system, as the rootkit can subvert the OS's own reporting mechanisms.