What is NIST Cybersecurity Framework (NIST CSF)?
NIST Cybersecurity Framework (NIST CSF) is a voluntary framework published by the National Institute of Standards and Technology that organizes cybersecurity activities into six functions: Govern, Identify, Protect, Detect, Respond, and Recover. Organizations use it to structure, measure, and communicate their security programs regardless of size or industry.
What it is
The NIST CSF gives organizations a common language for describing their security posture. Version 1.1, released in 2018, used five functions. Version 2.0, released in 2024, added a sixth function, Govern, which covers roles, policies, and oversight.
The six functions are:
- Govern: Set strategy, roles, and accountability for cybersecurity risk.
- Identify: Understand assets, risks, and the business context around them.
- Protect: Put controls in place to limit the impact of a security event.
- Detect: Find anomalies and security events when they occur.
- Respond: Take action when an incident is confirmed.
- Recover: Restore services and learn from the event.
Each function breaks down into categories and subcategories. Those subcategories map to specific practices, such as maintaining an asset inventory, enforcing access controls, or running tabletop exercises.
Why it matters
The framework gives security teams a structured way to prioritize work and report to leadership. Because it is outcome-based rather than prescriptive, it fits organizations that follow other standards such as ISO 27001, CIS Controls, or SOC 2. Regulators in sectors like financial services and healthcare increasingly reference NIST CSF alignment in their guidance.
It also provides a shared vocabulary. A CISO can use the six functions to explain gaps to a board without requiring technical detail.
How tools address it
No single product covers the entire framework. GRC platforms, which sit in the Governance, Risk, and Compliance category, are the most common tools used to map controls to NIST CSF subcategories, track gaps, and produce reports. Continuous controls monitoring tools test whether controls are working in real time. Risk assessment tools support the Identify function. Business continuity planning tools support the Recover function. Policy management tools support the Govern and Protect functions.