Frameworks · Plain English

NIST CSF 2.0 in plain English: the 6 functions and how to put them to work

Grey Mouse Studio · Updated 28 September 2026 · 8-minute read

The NIST Cybersecurity Framework (CSF) 2.0 is a free, voluntary guide from the US National Institute of Standards and Technology for managing cybersecurity risk. Version 2.0, published in February 2024, is written for every kind of organization — not just critical infrastructure — and adds a sixth function, Govern. Here is what it says, without the jargon, and how to start using it.

What changed from CSF 1.1 to 2.0?

The 6 functions of NIST CSF 2.0

The CSF Core is organized into six functions, 22 categories and 106 subcategories (specific outcomes). Govern sits in the middle and informs the other five.

Function In plain English Categories Related kits
Govern (GV) New in 2.0. Sets and monitors the organization's cybersecurity strategy, expectations and policy. Organizational Context; Risk Management Strategy; Roles, Responsibilities and Authorities; Policy; Oversight; Cybersecurity Supply Chain Risk Management GRC, Third-Party Risk
Identify (ID) Understand the organization's current cybersecurity risks — assets, risks and improvements. Asset Management; Risk Assessment; Improvement Vulnerability Management, GRC
Protect (PR) Use safeguards to manage those risks. Identity Management, Authentication and Access Control; Awareness and Training; Data Security; Platform Security; Technology Infrastructure Resilience IAM, Endpoint, Cloud, DLP, Awareness
Detect (DE) Find and analyze possible attacks and compromises. Continuous Monitoring; Adverse Event Analysis SOC, Threat Intelligence
Respond (RS) Take action on a detected cybersecurity incident. Incident Management; Incident Analysis; Incident Response Reporting and Communication; Incident Mitigation Incident Response
Recover (RC) Restore assets and operations affected by an incident. Incident Recovery Plan Execution; Incident Recovery Communication BCDR

The Govern function, explained

Govern answers "who decides, based on what, and how do we know it's working?" Its six categories cover the organization's context and obligations, a risk management strategy and risk appetite, clear roles and authorities, cybersecurity policy, leadership oversight of results, and cybersecurity supply chain risk management. In practice it means a named executive owner, an agreed risk appetite, policies people actually follow, and a regular Steering Committee that reviews KPIs and makes decisions.

Profiles and Tiers — the two tools that make CSF usable

Organizational Profiles

A Current Profile describes the outcomes you achieve today; a Target Profile describes the outcomes you want. The gap between them is your roadmap.

Tiers

Tiers describe how rigorous your cybersecurity risk governance and management are: Tier 1 Partial, Tier 2 Risk Informed, Tier 3 Repeatable and Tier 4 Adaptive. They are not a maturity score to chase — pick the tier that fits your risk.

How to start using NIST CSF 2.0 in five steps

  1. Scope it. Decide which business units, systems and data are in scope first.
  2. Build a Current Profile. Rate the 22 categories honestly: not started, partial, in place.
  3. Set a Target Profile. Use your risk appetite, obligations and threats to decide where you need to be.
  4. Plan the gaps. Turn the gaps into a 12-month roadmap with owners, budget and milestones.
  5. Govern it. Track KPIs monthly and report to a Steering Committee that can make decisions.

Put the framework to work

Each Cyber Program Kit gives one security domain a live Excel tracker, a ready-to-adopt SOP with NIST CSF 2.0 mapping, and six PowerPoint decks from daily stand-up to Steering Committee.

Browse the 16 kitsFree SOC KPI Dashboard

NIST CSF vs CMMC vs ISO 27001

Framework What it is Who uses it
NIST CSF 2.0 Voluntary, outcome-based risk framework Any organization
CMMC 2.0 US Department of Defense certification; Level 2 is based on NIST SP 800-171 Defense contractors handling CUI
ISO/IEC 27001:2022 Certifiable information security management system standard Organizations wanting certification

They work well together: many teams use the CSF to structure their program and map controls to CMMC or ISO 27001.

Frequently asked questions

Is NIST CSF 2.0 mandatory?

No. It is voluntary guidance. Some regulators, customers and contracts reference it, so check your own obligations.

How many functions are in NIST CSF 2.0?

Six: Govern, Identify, Protect, Detect, Respond and Recover.

What is the difference between NIST CSF and NIST SP 800-53?

The CSF describes outcomes (what good looks like); SP 800-53 is a detailed catalog of security and privacy controls you can use to achieve them.

Where can I read the official framework?

On NIST's website: nist.gov/cyberframework.

Educational summary only — not legal, audit or compliance advice. Always confirm details against the official NIST publication. NIST does not endorse any commercial product; framework names are used for reference.