What is Rootkit?

A Rootkit is a specific type of Trojan malware designed to gain unauthorized root or administrative access to a target device or network. Many rootkits are specifically designed to subvert security software and contain a variety of tools that enable hackers to steal personal information, damage, or completely hijack an infected device. As a result, rootkits are notoriously difficult to detect and remove, and in some cases the only way to remove a rootkit from a device is to reinstall the device's entire operating system.