Standards Comparison

    NIST 800-171

    Mandatory
    2020

    U.S. standard protecting CUI in nonfederal systems

    VS

    23 NYCRR 500

    Mandatory
    2017

    New York regulation for financial services cybersecurity.

    Quick Verdict

    NIST 800-171 mandates CUI safeguards for defense contractors via contracts, while 23 NYCRR 500 enforces cybersecurity for NY financial firms with fines. Firms adopt NIST for federal eligibility; NYCRR for regulatory compliance.

    Controlled Unclassified Information

    NIST 800-171

    NIST SP 800-171R3: Protecting CUI in Nonfederal Systems

    Cost
    €€€€
    Complexity
    Medium
    Implementation Time
    6-12 months

    Key Features

    • Tailored 110 controls for CUI confidentiality protection
    • Scoped to nonfederal systems processing/storing/transmitting CUI
    • Requires System Security Plan (SSP) and POA&M
    • Supports CUI security domain isolation for scoping
    • Derived from SP 800-53 moderate baseline
    Financial Services

    23 NYCRR 500

    23 NYCRR Part 500

    Cost
    €€€€
    Complexity
    High
    Implementation Time
    18-24 months

    Key Features

    • Annual CEO/CISO compliance certification with five-year retention
    • 72-hour notification for material cybersecurity incidents
    • Risk-based cybersecurity program and assessments
    • Phishing-resistant MFA for privileged and remote access
    • Third-party service provider security policy and oversight

    Detailed Analysis

    A comprehensive look at the specific requirements, scope, and impact of each standard.

    NIST 800-171 Details

    What It Is

    NIST SP 800-171 Revision 3 is a U.S. government framework providing security requirements for protecting Controlled Unclassified Information (CUI) confidentiality in nonfederal systems. It tailors controls from SP 800-53 moderate baseline for contractors and supply chains, emphasizing risk-commensurate safeguards without full federal FISMA obligations.

    Key Components

    • 97 requirements across 17 families (e.g., Access Control, Audit, Supply Chain Risk Management).
    • Derived from FIPS 200 and SP 800-53R5; eliminates basic/derived split.
    • Requires System Security Plan (SSP) and Plan of Action and Milestones (POA&M).
    • Assessment via SP 800-171A R3 (examine/interview/test); DoD scoring (up to 110 points).

    Why Organizations Use It

    • Mandatory via contracts (e.g., DFARS 252.204-7012) for DoD CUI handlers.
    • Enables contract eligibility, CMMC Level 2 certification.
    • Reduces breach risk, builds supply chain trust.
    • Supports FedRAMP Moderate equivalence for cloud.

    Implementation Overview

    • Scope CUI enclave; gap analysis; remediate high-impact controls (MFA, logging).
    • Develop SSP/POA&M; continuous monitoring.
    • Applies to federal contractors; 3-36 months typical, varying by size.

    23 NYCRR 500 Details

    What It Is

    23 NYCRR Part 500 is the New York Department of Financial Services (NYDFS) Cybersecurity Regulation, a state-level mandate for financial services entities. It establishes minimum, risk-based cybersecurity requirements to protect nonpublic information (NPI) and information systems. The approach emphasizes governance, evidence-based controls, and adaptability to evolving threats.

    Key Components

    • 14 core requirements including cybersecurity program, policy, CISO appointment, MFA, encryption, risk assessments, penetration testing, TPSP oversight, and incident response.
    • Built on risk assessment as the foundation, with annual certifications and 72-hour incident notifications.
    • Phased compliance for Class A companies with enhanced audits and controls; five-year record retention.

    Why Organizations Use It

    • Mandatory for NY-licensed financial entities (banks, insurers, etc.) to avoid multimillion-dollar fines (e.g., Robinhood $30M).
    • Enhances resilience, reduces incident risk, builds stakeholder trust, and aligns with NIST CSF.
    • Provides competitive edge in vendor negotiations and insurance premiums.

    Implementation Overview

    • Applies to Covered Entities in NY financial services; scalable by size/complexity.
    • Phased roadmap: gap analysis, asset inventory, MFA rollout, TPSP contracts, testing, evidence repository.
    • No external certification but NYDFS examinations and annual CEO/CISO attestations required. (178 words)

    Key Differences

    Scope

    NIST 800-171
    CUI protection in nonfederal systems, 17 families
    23 NYCRR 500
    Financial services cybersecurity, NPI protection

    Industry

    NIST 800-171
    Defense contractors, federal supply chain, US-focused
    23 NYCRR 500
    NY-licensed financial entities, state-specific

    Nature

    NIST 800-171
    NIST recommendation, contractually mandatory via DFARS
    23 NYCRR 500
    Mandatory state regulation with fines/enforcement

    Testing

    NIST 800-171
    SP 800-171A procedures, CMMC assessments, self/3PAO
    23 NYCRR 500
    Annual pen testing, vulnerability assessments, risk-based

    Penalties

    NIST 800-171
    Contract ineligibility, SPRS scoring impacts awards
    23 NYCRR 500
    Monetary fines, consent orders, license actions

    Frequently Asked Questions

    Common questions about NIST 800-171 and 23 NYCRR 500

    NIST 800-171 FAQ

    23 NYCRR 500 FAQ

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