Host-based Intrusion Detection System

Host-based Intrusion DetectionDetectionThe capability to identify suspicious activity, attacks, or policy violations in time. System: Monitors events and changes directly on an endpoint or server. The focus is on endpointsEndpointA user or server device that communicates with a network and runs workloads or applications., serversServerA system that provides applications, data, or network services to other systems., or device-level technology. Typical measures include hardening, centralized managementCentralized ManagementAdministration of distributed systems or controls from a common management plane., telemetryTelemetryAutomatically collected measurements and events that describe the state and behavior of systems., rapid isolationIsolationThe separation of a system, process, or resource to limit access and prevent spread., and controlled updates.

How it works and where it fits

Host-based Intrusion Detection System connects data sources to detection or assessment logic. Raw records become security-relevant only when timing, identity, system context, and expected behavior are considered. Rules, correlations, statistical models, and analyst decisions may work together; no single method reliably covers every attack pattern.

Practical security relevance

Operational quality is reflected in coverage, data completeness, detection time, and false-alert workload. Data sources need owners, time synchronization, retention, and quality controls. Detections should be tested, versioned, and improved using real incidents. Every meaningful alert also requires triage guidance, escalation, and possible response actions.

Related concepts

• Intrusion Detection SystemIntrusion Detection SystemDetects suspicious or anomalous activities on hosts or within networks.: Detects suspicious or anomalous activities on hosts or within networks.
• Endpoint Detection and ResponseEndpoint Detection and ResponseContinuously monitors endpoints and supports detection, investigation, and containment.: Continuously monitors endpoints and supports detection, investigation, and containment.
• Host Intrusion Prevention SystemHost Intrusion Prevention SystemEndpoint system for detecting and actively blocking suspicious activities.: Endpoint system for detecting and actively blocking suspicious activities.
• Endpoint Protection PlatformEndpoint Protection PlatformBundles preventive security functions such as malware protection, firewalls, and device control.: Bundles preventive security functions such as malware protection, firewalls, and device control.