HIDS, or Host Intrusion Detection System, is a security technology designed to monitor and analyze the activities on a computer or network host. It detects suspicious behavior by examining system logs, file integrity, and user activities. When it identifies potential threats, it alerts administrators to take appropriate action. HIDS operates by using predefined rules and signatures to recognize known attack patterns. It can also employ anomaly detection to identify unusual behavior that may indicate a security breach. By providing real-time monitoring, HIDS helps organizations protect their systems from unauthorized access and potential damage.