Standards Comparison

    NIS2

    Mandatory
    2022

    EU directive for cybersecurity resilience across critical sectors

    VS

    ISO 27017

    Voluntary
    2015

    International code of practice for cloud security controls

    Quick Verdict

    NIS2 mandates cybersecurity for EU critical sectors with strict reporting and fines, while ISO 27017 provides voluntary cloud security guidance integrated into ISO 27001. Companies adopt NIS2 for regulatory compliance, ISO 27017 for global cloud best practices and assurance.

    Cybersecurity

    NIS2

    Directive (EU) 2022/2555 (NIS2)

    Cost
    €€€€
    Complexity
    High
    Implementation Time
    12-18 months

    Key Features

    • Expanded scope with size-cap rule for medium/large entities
    • Strict multi-stage incident reporting within 24/72 hours
    • Direct senior management accountability for compliance
    • Fines up to 2% of global annual turnover
    • Continuous risk management including supply chain security
    Cloud Security

    ISO 27017

    ISO/IEC 27017:2015 Code of practice for cloud security

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

    Key Features

    • Clarifies shared responsibilities between CSPs and CSCs
    • Adds 7 cloud-specific controls for multi-tenancy isolation
    • Provides guidance for 37 ISO 27002 controls in cloud
    • Addresses virtual machine hardening and configuration
    • Enables customer monitoring of cloud service activities

    Detailed Analysis

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

    NIS2 Details

    What It Is

    NIS2 Directive, officially Directive (EU) 2022/2555, is an EU regulation expanding the original NIS Directive. It establishes a high common level of cybersecurity across member states, targeting essential and important entities in critical sectors like energy, transport, health, and digital infrastructure. It uses a risk-based approach with proactive, continuous measures.

    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 senior management responsibility.
    • No formal certification; compliance via national transposition and audits.

    Why Organizations Use It

    • Legal compliance to avoid fines up to 2% global turnover.
    • Enhances resilience against cyber threats, protects critical services.
    • Builds stakeholder trust, improves operational continuity.
    • Aligns with standards like ISO 27001, boosts competitiveness.

    Implementation Overview

    • Assess scope (medium/large entities in covered sectors), implement risk assessments, reporting procedures.
    • Tailor to national laws (transposed by Oct 2024).
    • Ongoing: training, spot checks, supply chain audits.
    • Applies EU-wide to specified sectors and sizes.

    ISO 27017 Details

    What It Is

    ISO/IEC 27017:2015 is an international code of practice for information security controls tailored to cloud services. It provides implementation guidance for applying ISO/IEC 27002 controls in cloud environments, introducing cloud-specific additions for CSPs and CSCs. The risk-based approach integrates seamlessly into an ISO 27001 ISMS, addressing shared responsibilities and multi-tenancy risks.

    Key Components

    • Additional guidance on 37 ISO/IEC 27002 controls adapted for cloud contexts
    • 7 new cloud-specific CLD controls on segregation, VM hardening, monitoring, asset lifecycle
    • Structured across 14 domains mirroring ISO 27002 (e.g., access control, operations security)
    • No standalone certification; assessed within ISO 27001 audits

    Why Organizations Use It

    • Tackles cloud-unique risks like isolation failures and unclear duties
    • Supports regulatory alignment (GDPR, CCPA) and procurement demands
    • Boosts risk management, operational maturity, and customer trust
    • Offers competitive differentiation for CSPs in multi-cloud markets

    Implementation Overview

    • Extend existing ISO 27001 ISMS through risk assessments and control mapping
    • Activities include shared responsibility matrices, configuration hardening, logging setup
    • Suited for cloud-reliant organizations globally, any size
    • Joint audits with ISO 27001 by accredited bodies, typically 9-12 months

    Key Differences

    Scope

    NIS2
    Critical infrastructure sectors EU-wide
    ISO 27017
    Cloud-specific security controls globally

    Industry

    NIS2
    Essential/important entities in EU sectors
    ISO 27017
    Cloud providers and customers all industries

    Nature

    NIS2
    Mandatory EU regulation with fines
    ISO 27017
    Voluntary ISO guidance standard

    Testing

    NIS2
    Incident reporting and spot checks
    ISO 27017
    Integrated ISO 27001 audits

    Penalties

    NIS2
    Up to 2% global turnover fines
    ISO 27017
    No legal penalties, certification loss

    Frequently Asked Questions

    Common questions about NIS2 and ISO 27017

    NIS2 FAQ

    ISO 27017 FAQ

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