by George Whittaker In an era where security threats continually evolve, protecting the heart of an operating system, the kernel, has never been more critical. One tool gaining traction in the Linux world is the Linux Kernel Runtime Guard (LKRG), a specialized security module designed to detect and respond to attacks targeting the kernel while the system is running. This project recently reached its first stable milestone with version 1.0.0, marking a major step forward for runtime protection on Linux systems. What Is LKRG? LKRG (short for Linux Kernel Runtime Guard) is a loadable kernel module that continuously monitors the health and integrity of the Linux kernel while it’s running. Unlike many security features that rely on compile-time patches or static defenses, LKRG acts at runtime, watching for signs of unauthorized changes or exploit attempts and taking configurable action when something suspicious is detected. Because LKRG is a module rather than a patch to the kernel source,