What is the main purpose of a rootkit?

The primary purpose of a rootkit is to hide certain processes or programs from detection. Rootkits are a type of malicious software designed to gain unauthorized access to a computer or network while concealing their existence. They operate at a low level within the operating system, often modifying core system processes and configurations to avoid detection by security tools such as antivirus programs.

By hiding their presence, rootkits allow attackers to maintain control over compromised systems without being noticed. This stealth capability is crucial for malicious actors as it enables them to extract sensitive information, manipulate data, or conduct further attacks without alerting the user or system administrators. Understanding rootkits is vital in the field of cybersecurity, as they pose significant risks to system integrity and data confidentiality.

In contrast, options discussing system security improvement, user interaction facilitation, and resource management do not align with the core function of a rootkit, which is fundamentally about concealment and maintaining unauthorized access.