This whitepaper compares three threat detection and response systems: EDR, NDR, and XDR. EDR secures endpoints through behavior analytics and is strong in forensics, but has coverage and scalability issues. NDR monitors network traffic for anomalies and offers agentless deployment and broad visibility, yet struggles with encrypted traffic and endpoint insight. XDR integrates both EDR and NDR data with additional telemetry to enable centralized detection and automated response, but its effectiveness varies by vendor model. A layered approach using EDR and NDR, optionally extended with XDR, is recommended for robust cyber defense.

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