The "Linux Auditd Service Restarted" analytic rule monitors the restarting or re-enabling of services on Linux systems through the use of `systemctl` or `service` commands. It utilizes the data collected from the Linux Audit daemon (Auditd), focusing on logs related to process and command-line executions. This behavior is critical to track because malicious actors may exploit service restarts to maintain persistence on compromised hosts, execute unauthorized actions, or deploy repeated malicious payloads. If identified as a malicious action, it poses significant risks including unauthorized access or data destruction. Therefore, security analysts are encouraged to investigate occurrences of these events to counter threats effectively and secure systems from further compromise.