Question

HIDS

IDS, DOD, Host intrusion detection, IPS, Intrusion detection, Intrusion prevention, HIPS, HIDS

DOES HOST INTRUSION DETECTION SYSTEMS USE HEURISTIC BASED DETECTION WHICH IN TURNS USES A CIPHER KEY TO DETERMINE IF AN ALERT SHOULD BE TRIGGERED?

HIDS can use various methods of detection. Heuristics or signature based are more like anti-virus products. Network behavior anomaly detection is different. It uses a baseline to compare against current behavior to see if there is something unusual happening that needs attention. For more information about intrusion detection systems see this.