What is NIST Cybersecurity Framework (CSF) 2.0?
Overview
You'll gain a comprehensive understanding of the NIST Cybersecurity Framework (CSF) 2.0, its purpose, structure, and how it helps organizations manage cybersecurity risks effectively regardless of size or sector.
Who this is for
This guide is for:
Security professionals evaluating cybersecurity frameworks
Compliance teams implementing NIST CSF requirements
Executives seeking to understand cybersecurity risk management approaches
Organizations required to comply with NIST CSF for regulatory or customer requirements
Consultants advising clients on framework selection
What is the NIST Cybersecurity Framework?
Definition and purpose
The NIST Cybersecurity Framework (CSF) is a voluntary framework developed by the National Institute of Standards and Technology to help organizations understand, assess, prioritize, and communicate their cybersecurity risks and the actions they will take to manage those risks.
Released in February 2024, CSF 2.0 represents a significant evolution from version 1.1, expanding its scope beyond U.S. critical infrastructure to serve all organizations worldwide, regardless of:
Size (from small businesses to large enterprises)
Sector (government, commercial, nonprofit, academic)
Geography (sector-, country-, and technology-neutral)
Cybersecurity maturity level
Key principle: The NIST CSF does not prescribe specific technologies or controls. Instead, it provides a flexible taxonomy of desired cybersecurity outcomes that organizations can achieve using their preferred methods, tools, and existing standards.
Why NIST CSF matters
Organizations adopt NIST CSF for multiple reasons:
Regulatory compliance: Required or recommended by federal agencies, state governments, and industry regulations
Customer requirements: Enterprise customers increasingly require NIST CSF alignment from vendors and suppliers
Risk management: Provides structured approach to identify and mitigate cybersecurity risks
Board communication: Offers common language for executives, managers, and technical teams
Framework integration: Easily maps to other standards like ISO 27001, SOC 2, and NIST SP 800-53
Supply chain security: Helps assess and communicate cybersecurity posture with partners
Real-world adoption: NIST CSF has become one of the most widely adopted cybersecurity frameworks globally, with organizations in over 50 countries using it to structure their cybersecurity programs.
NIST CSF 2.0 core components
The framework consists of three main components that work together:
1. CSF Core: The taxonomy of outcomes
The CSF Core is the foundation—a hierarchy of cybersecurity outcomes organized into Functions, Categories, and Subcategories.
Six core functions
NIST CSF 2.0 introduces six Functions (previously five in version 1.1), with the new GOVERN function emphasizing cybersecurity governance:
Function | Purpose | Key outcomes |
|---|---|---|
GOVERN (GV) | Establish cybersecurity risk management strategy, expectations, and policy | Organizational context, risk strategy, roles and responsibilities, policy, oversight, supply chain risk management |
IDENTIFY (ID) | Understand current cybersecurity risks to assets, people, and operations | Asset management, risk assessment, improvement opportunities |
PROTECT (PR) | Use safeguards to manage cybersecurity risks | Identity management, access control, awareness and training, data security, platform security, technology resilience |
DETECT (DE) | Find and analyze possible cybersecurity attacks and compromises | Continuous monitoring, threat detection, anomaly analysis |
RESPOND (RS) | Take actions regarding detected cybersecurity incidents | Incident management, analysis, mitigation, reporting, communication |
RECOVER (RC) | Restore assets and operations affected by incidents | Incident recovery planning, improvements, communications |
Understanding the wheel: NIST visualizes the Functions as a wheel with GOVERN at the center, emphasizing that governance informs how an organization implements all other Functions. The Functions are not sequential steps—they operate concurrently and continuously.
Categories and subcategories
Each Function breaks down into Categories (related cybersecurity outcomes) and Subcategories (specific, detailed outcomes):
23 Categories: Groups of related outcomes within each Function
106 Subcategories: Specific, measurable outcomes that support each Category
Example hierarchy:
Function: IDENTIFY (ID)
Category: Asset Management (ID.AM)
Subcategory: ID.AM-01 - "Inventories of hardware managed by the organization are maintained"
2. CSF Organizational Profiles
Organizational Profiles describe an organization's cybersecurity posture in terms of the CSF Core outcomes. Profiles help organizations:
Document current state: Current Profile describes what outcomes you're currently achieving
Define target state: Target Profile describes your desired cybersecurity outcomes
Identify gaps: Compare Current and Target to prioritize improvements
Communicate requirements: Share expectations with suppliers, partners, and stakeholders
Community Profiles: NIST and industry groups publish Community Profiles—baseline CSF outcomes tailored for specific sectors (manufacturing, healthcare, small business) or use cases (ransomware protection, supply chain security). Organizations can use these as starting points for their Target Profiles.
3. CSF Tiers
Tiers characterize the rigor of an organization's cybersecurity risk governance and management practices, providing context for how cybersecurity risks are managed:
Tier | Characteristics |
|---|---|
Tier 1: Partial | Ad hoc risk management, limited awareness, informal cybersecurity information sharing |
Tier 2: Risk Informed | Risk management approved by management, some awareness, informal information sharing within organization |
Tier 3: Repeatable | Formal policies, organization-wide approach, regular updates, consistent methods, routine information sharing |
Tier 4: Adaptive | Risk-informed culture, continuous improvement, predictive capabilities, real-time or near real-time information sharing |
Important: Higher Tiers are not inherently better. Organizations should select a Tier that aligns with their risk tolerance, resources, regulatory requirements, and business objectives. A small business may appropriately operate at Tier 2, while critical infrastructure might require Tier 3 or 4.
What's new in NIST CSF 2.0
CSF 2.0, released in February 2024, introduces significant enhancements over version 1.1:
Major changes
New GOVERN Function: Elevates governance from a Category to a full Function, emphasizing leadership's role in cybersecurity risk management and alignment with enterprise risk management (ERM)
Expanded scope: Explicitly designed for all organizations globally, not just U.S. critical infrastructure
Supply chain focus: Enhanced Category (GV.SC) dedicated to cybersecurity supply chain risk management (C-SCRM)
Reorganized structure: Updated from 5 Functions/23 Categories/108 Subcategories to 6 Functions/23 Categories/106 Subcategories (net reduction due to consolidation)
Implementation Examples: New online resource providing actionable examples of how to achieve each Subcategory outcome
Quick Start Guides: Tailored guidance for specific audiences (small businesses, enterprise risk management, organizational profiles, supply chain)
Enhanced mappings: Informative References updated to include mappings to ISO 27001:2022, NIST SP 800-171 Rev. 3, and other contemporary standards
Migration path: Organizations using CSF 1.1 can transition to 2.0 by reviewing the GOVERN Function outcomes, updating their Organizational Profiles to reflect the new structure, and leveraging the transition Quick Start Guide provided by NIST.
How NIST CSF integrates with other frameworks
One of NIST CSF's greatest strengths is its ability to complement and integrate with other cybersecurity and risk management frameworks:
Framework relationships
ISO 27001: NIST maintains official mappings between CSF 2.0 and ISO/IEC 27001:2022, enabling organizations to achieve both simultaneously
NIST SP 800-53: CSF Informative References map each Subcategory to specific controls in NIST SP 800-53 (federal security controls)
NIST SP 800-171: Mappings support organizations protecting Controlled Unclassified Information (CUI)
SOC 2: Organizations can map SOC 2 Trust Services Criteria to CSF outcomes for unified compliance
NIST AI RMF: The AI Risk Management Framework complements CSF for organizations deploying artificial intelligence systems
NIST Privacy Framework: Addresses privacy risks that overlap with cybersecurity (data breaches, unauthorized access)
Integration benefit: Organizations implementing multiple frameworks can use NIST CSF as a "hub" framework, mapping all compliance requirements to CSF outcomes and then implementing controls that satisfy multiple standards simultaneously, reducing duplication and cost.
How AI accelerates NIST CSF implementation
Implementing NIST CSF traditionally requires significant expertise to interpret outcomes, select appropriate controls, and create documentation. AI-powered tools like ISMS Copilot can accelerate this process:
Key AI capabilities for NIST CSF
Outcome interpretation: Get plain-language explanations of CSF Functions, Categories, and Subcategories tailored to your organization
Profile development: Generate Current and Target Profile templates structured around your industry, size, and risks
Gap analysis: Upload existing policies and controls to identify which CSF outcomes you're achieving and which require attention
Control selection: Receive recommendations for specific controls and practices to achieve CSF Subcategory outcomes
Framework mapping: Map NIST CSF to ISO 27001, SOC 2, or other frameworks you're implementing
Documentation generation: Create policies, procedures, and governance documents aligned with CSF requirements
Tier assessment: Evaluate your organization's current Tier and develop roadmaps for improvement
ISMS Copilot and NIST CSF: ISMS Copilot provides general NIST CSF guidance based on the official framework documentation. While ISMS Copilot specializes in ISO 27001:2022, it can help you understand NIST CSF concepts, map frameworks, and generate supporting documentation. Always verify critical NIST CSF requirements against official NIST resources.
Common NIST CSF use cases
Organizations implement NIST CSF for diverse purposes:
1. Building a cybersecurity program from scratch
Small to mid-size organizations use CSF to structure their first formal cybersecurity program, prioritizing outcomes based on business risks and available resources.
2. Federal and state compliance
Government agencies and contractors align with NIST CSF to meet federal cybersecurity requirements, including Executive Order 14028 and agency-specific mandates.
3. Vendor risk management
Organizations use CSF-based questionnaires to assess third-party and supplier cybersecurity posture, requiring vendors to demonstrate alignment with specific CSF outcomes.
4. Board-level reporting
Security leaders use CSF Functions and Tiers to communicate cybersecurity posture and risk to boards and executives in business-relevant terms.
5. Framework consolidation
Organizations subject to multiple compliance frameworks map all requirements to NIST CSF, implementing unified controls that satisfy ISO 27001, SOC 2, HIPAA, and industry regulations simultaneously.
6. Incident response planning
Organizations structure incident response capabilities around the DETECT, RESPOND, and RECOVER Functions, ensuring comprehensive coverage.
Getting started with NIST CSF
To begin your NIST CSF journey:
Download the framework: Access the official NIST CSF 2.0 PDF
Review Quick Start Guides: NIST provides guides for specific use cases
Assess your current state: Evaluate which CSF outcomes you're already achieving
Define your target: Select CSF outcomes aligned with your risk profile and business objectives
Leverage AI assistance: Use ISMS Copilot to accelerate profile development, documentation, and implementation planning
Implement incrementally: Prioritize high-risk areas and achieve outcomes in phases
Measure and improve: Continuously assess progress and update Profiles as your organization evolves
Next steps
Now that you understand NIST CSF 2.0, explore how to implement it with AI assistance:
Implementation guide: Learn step-by-step implementation in How to get started with NIST CSF 2.0 implementation using AI
Profile development: Create Current and Target Profiles in How to create NIST CSF organizational profiles using AI
Framework mapping: Map NIST CSF to other standards in How to map NIST CSF 2.0 to other frameworks using AI
Core Functions: Implement the six Functions in How to implement NIST CSF 2.0 core functions using AI
Additional resources
Official NIST CSF website: nist.gov/cyberframework
CSF 2.0 Core (full taxonomy): Online searchable database
Implementation Examples: Actionable guidance for each Subcategory
Informative References: Mappings to standards and controls
Community Profiles: Sector-specific and use-case profiles
Ready to implement NIST CSF with AI? Start by creating a dedicated workspace at chat.ismscopilot.com and asking: "Help me understand which NIST CSF 2.0 outcomes are most critical for my organization."