Seccomp, short for secure computing mode, is a Linux kernel feature that restricts the system calls a process can make, enhancing security by preventing unauthorized code execution. It is particularly useful for mitigating remote code execution vulnerabilities that can lead to further malicious activities. Elasticsearch integrates seccomp to enhance security by installing system call filters early in its startup process, using Java Native Access (JNA) to access native libraries. This process blocks potentially harmful system calls like FORK, VFORK, EXECVE, and EXECVEAT, which are essential for starting new processes. Seccomp is also employed in Beats, a component of the Elastic Stack, where it is configured via YAML to allow or reject specific system calls, using a whitelist approach to enhance security further. The blog post also touches on the use of Auditbeat for logging seccomp violations and demonstrates how to generate seccomp events with tools like firejail, allowing users to monitor and adapt their security policies over time. The Elastic Stack's use of seccomp underscores the importance of leveraging existing operating system features to enhance security, rather than attempting to develop custom solutions.