NIST CSF 2.0 Detect Function: Continuous Monitoring & Adverse Event Analysis

What the Detect Function Covers

Monitoring assets for anomalies, IoCs, and adverse events, then analyzing those events — correlation, scope, threat-intelligence context, and incident declaration criteria. CSF 2.0 structures Detect as two Categories (DE.DP from 1.1 is not a Detect Category in 2.0).

Detect Categories (Official CSF 2.0)

Source: NIST CSWP 29, Table 1 / Appendix A — 2 Categories.

Why Detect Matters

Detection without analysis is alert noise; analysis without monitoring has nothing to correlate. Incident declaration criteria under DE.AE are the handoff into Respond. Continuous monitoring should run continuously alongside Govern, Identify, and Protect.

How CyberSilo Helps Operationalize Detect

• ThreatHawk SIEM — primary: collection, correlation, and retention for DE.CM and DE.AE
• Agentic SOC AI — accelerate triage, reduce false-positive load, escalate when criteria are met
• Compliance Standards Automation — evidence packs (alert coverage, use-case to Subcategory mapping) for audits and Profiles

Frequently Asked Questions

How many Detect Categories are in CSF 2.0?

Two: Continuous Monitoring (DE.CM) and Adverse Event Analysis (DE.AE), per NIST CSWP 29 Table 1. The CSF 1.1 Detection Processes (DE.DP) Category is not a Detect Category in 2.0.

Does deploying a SIEM equal Detect compliance?

No. CSF outcomes are organizational. A SIEM is a common way to achieve continuous monitoring and adverse event analysis, but Profiles still need defined criteria, coverage, and incident declaration practices — not tools alone.

Is physical environment monitoring in scope for Detect?

Yes. Continuous Monitoring includes monitoring the physical environment for potentially adverse events (for example DE.CM-02 in CSWP 29 Appendix A), alongside networks, personnel activity, providers, and computing environments.

Related CSF 2.0 Function Guides

Govern · Identify · Protect · Respond · Recover