NIS2
EU directive for cybersecurity resilience in critical sectors
NIST 800-171
U.S. standard protecting CUI in nonfederal systems
Quick Verdict
NIS2 mandates EU-wide cybersecurity for critical sectors with strict reporting and fines up to 2% turnover, while NIST 800-171 provides US contractors CUI protection via contract-enforced controls and assessments. EU firms comply for regulation; US firms for federal contracts.
NIS2
Directive (EU) 2022/2555 (NIS2)
Key Features
- Broadens scope via size-cap rule to medium/large entities
- Mandates strict 24-hour early incident warning reporting
- Holds senior management directly accountable for compliance
- Imposes fines up to 2% of global annual turnover
- Requires continuous risk management and supply chain security
NIST 800-171
NIST SP 800-171 Rev 3
Key Features
- Protects CUI confidentiality in nonfederal systems
- 97 requirements across 17 control families
- Mandates SSP and POA&M documentation
- Enables CUI enclave scoping and isolation
- Aligns with DFARS and CMMC compliance
Detailed Analysis
A comprehensive look at the specific requirements, scope, and impact of each standard.
NIS2 Details
What It Is
NIS2, officially Directive (EU) 2022/2555, is an EU regulation expanding the original NIS Directive. It establishes a high common level of cybersecurity for critical infrastructure and digital services across member states. Primary scope covers essential and important entities in sectors like energy, transport, health, and digital providers. It adopts a risk-based approach with continuous assurance, shifting from static compliance to proactive resilience.
Key Components
- Four pillars: risk management, incident reporting, business continuity, corporate accountability.
- Strict timelines: 24-hour early warnings, 72-hour notifications, one-month final reports.
- Mandates supply chain security, access controls, encryption, and staff training.
- Built on standards like ISO 27001; no formal certification but national enforcement with spot checks.
Why Organizations Use It
Legal compliance avoids fines up to 2% global turnover. Enhances resilience against threats, builds stakeholder trust, and ensures operational continuity. Provides competitive edge through harmonized EU-wide security.
Implementation Overview
Applies to medium/large entities (>50 employees or €10M turnover) in covered sectors EU-wide. Key steps: risk assessments, incident procedures, governance setup, supplier audits. Transposition by October 2024; expect 12-18 months with ongoing monitoring.
NIST 800-171 Details
What It Is
NIST SP 800-171 (Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations) is a U.S. framework defining security requirements to safeguard CUI confidentiality in nonfederal systems. It employs a control-based approach tailored from NIST SP 800-53 Moderate and FIPS 200 baselines for contractors and supply chains.
Key Components
- 97 requirements (Rev 3) organized into 17 families (e.g., Access Control, Audit, Supply Chain Risk Management)
- Core artifacts: System Security Plan (SSP), Plan of Action and Milestones (POA&M)
- Assessment procedures in SP 800-171A Rev 3 (examine/interview/test)
- Compliance model: self-assessment, third-party audits (e.g., CMMC Level 2)
Why Organizations Use It
- Mandatory via DFARS 252.204-7012 for DoD contractors handling CUI
- Ensures contract eligibility, mitigates breach risks
- Enhances supply chain trust, competitive positioning
Implementation Overview
- Phased: scoping CUI boundaries, gap analysis, controls deployment, evidence building
- Targets federal contractors; scales by size/industry
- Requires audits, continuous monitoring; 6-24 months typical
Key Differences
| Aspect | NIS2 | NIST 800-171 |
|---|---|---|
| Scope | EU critical infrastructure cybersecurity resilience | CUI confidentiality in nonfederal US systems |
| Industry | EU essential/important entities, medium/large orgs | US federal contractors, DoD supply chain |
| Nature | Mandatory EU directive, national transposition | NIST standard, contractually enforced via DFARS |
| Testing | Incident reporting, spot checks by authorities | SP 800-171A assessments, SSP/POA&M reviews |
| Penalties | Up to 2% global turnover fines | Contract loss, no direct fines |
Scope
Industry
Nature
Testing
Penalties
Frequently Asked Questions
Common questions about NIS2 and NIST 800-171
NIS2 FAQ
NIST 800-171 FAQ
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