The ISO/IEC 27000-series (ISMS Family of Standards) 

1. ISO/IEC 27001: ISO/IEC 27001 is a globally recognized standard for managing information security. It provides a framework for establishing, implementing, maintaining, and continually improving an Information Security Management System (ISMS). The standard is designed to help organizations make the information assets they hold more secure. Here is a detailed breakdown of ISO/IEC 27001:
   • Detailed Requirements: Specifies requirements for establishing, implementing, maintaining, and continually improving an ISMS within the context of the organization’s overall business risks. It includes requirements for the assessment and treatment of information security risks tailored to the needs of the organization.
   • Annex A: Contains a list of 114 controls categorized into 14 control sets, covering various aspects of information security.
   • Certification: Organizations can be certified against ISO/IEC 27001 by an accredited certification body.
2. ISO/IEC 27002: ISO/IEC 27002 is a comprehensive international standard that provides guidelines for organizational information security standards and information security management practices. It is designed to help organizations implement, maintain, and improve information security controls and processes. The standard is structured to support the implementation of ISO/IEC 27001 by providing best practice recommendations for information security management.
   • Control Objectives and Controls: Provides detailed information security control objectives and a set of generally accepted information security controls.
   • Domains: Includes domains like security policy, organization of information security, human resources security, asset management, access control, cryptography, physical and environmental security, operations security, communications security, system acquisition, development and maintenance, supplier relationships, information security incident management, information security aspects of business continuity management, and compliance.
   • Implementation Guidance: Offers guidance on how to implement the controls described.
3. ISO/IEC 27003: ISO/IEC 27003 providing guidance on the implementation of an Information Security Management System (ISMS). This standard supports organizations in understanding the requirements of ISO/IEC 27001 and offers best practices for the planning, implementation, operation, monitoring, review, maintenance, and improvement of an ISMS.
   • Implementation Support: Focuses on the crucial activities required to implement an ISMS in accordance with ISO/IEC 27001.
   • Phases: Covers ISMS project planning, risk assessment and treatment, development of the ISMS policy, definition of ISMS scope, management review, internal ISMS audits, and continual ISMS improvement.
   • Templates and Examples: Provides templates and examples to assist organizations in their ISMS implementation efforts.
4. ISO/IEC 27004: ISO/IEC 27004 provides guidelines for monitoring, measuring, analyzing, and evaluating the performance and effectiveness of an Information Security Management System (ISMS). It is designed to support the requirements of ISO/IEC 27001, helping organizations assess their ISMS and make data-driven decisions to improve information security management.
   • Metrics and Measurement: Focuses on the development and use of measures and measurement models to assess the performance of the ISMS.
   • Key Areas: Discusses the selection of appropriate metrics, the use of monitoring tools, and the analysis of measurement results to inform decision-making.
   • Evaluation: Guides organizations on how to evaluate their ISMS performance and improve their information security management practices.
5. ISO/IEC 27005: ISO/IEC 27005 is a standard that provides guidelines for information security risk management in the context of an Information Security Management System (ISMS). It supports the requirements outlined in ISO/IEC 27001 and helps organizations identify, assess, and treat information security risks effectively.
   • Risk Management: Provides guidelines for information security risk management, which is integral to an ISMS.
   • Process: Covers risk assessment (identification, analysis, and evaluation), risk treatment, risk acceptance, risk communication, and risk monitoring and review.
   • Tools and Techniques: Includes detailed guidance on risk assessment methodologies and tools.
6. ISO/IEC 27006: This standard provides requirements and guidance for bodies providing audit and certification of an Information Security Management System (ISMS). It is an extension of ISO/IEC 17021-1, which specifies general requirements for certification bodies performing audits and certifications of management systems. ISO/IEC 27006 focuses on ensuring that certification bodies are competent, consistent, and impartial in their assessment of ISMSs based on ISO/IEC 27001.
   • Certification Bodies: Specifies requirements for bodies providing audit and certification of ISMS.
   • Competence Requirements: Ensures that auditors and certification bodies are competent to perform ISMS audits.
   • Assessment Process: Describes the process of evaluating and certifying an organization’s ISMS, ensuring that certification bodies follow a consistent and reliable process.
7. ISO/IEC 27007: This standard provides guidelines for auditing an Information Security Management System (ISMS). It aligns with the requirements of ISO/IEC 27001 and supports organizations in conducting effective ISMS audits to ensure the system’s effectiveness, adequacy, and compliance with established standards and policies.
   • ISMS Audits: Provides guidelines for ISMS auditing, including the management of an audit program, the principles of auditing, the conducting of audits, and the competence of ISMS auditors.
   • Auditing Principles: Emphasizes the importance of independence, objectivity, and confidentiality in the auditing process.
   • Audit Program: Discusses how to plan, conduct, report, and follow up on audits.
8. ISO/IEC 27008: ISO/IEC 27008 provides guidelines for auditors on assessing the implementation and effectiveness of information security controls. It complements ISO/IEC 27001 and ISO/IEC 27002 by offering detailed guidance on how to evaluate the controls within an Information Security Management System (ISMS).
   • Control Assessment: Offers guidance for auditors on assessing the information security controls implemented as part of the ISMS.
   • Evaluation Criteria: Provides detailed criteria and methodologies for evaluating the effectiveness and efficiency of security controls.
   • Audit Techniques: Describes specific audit techniques and approaches to verify control implementation and effectiveness.
9. ISO/IEC 27017: ISO/IEC 27017 is a standard that provides guidelines for information security controls applicable to the provision and use of cloud services. It is an extension of ISO/IEC 27002, tailored specifically to address the unique aspects of cloud computing, both for cloud service providers (CSPs) and cloud service customers (CSCs).
   • Cloud Security: Provides guidelines for information security controls applicable to the provision and use of cloud services.
   • Control Enhancements: Extends ISO/IEC 27002 controls with specific cloud-focused controls.
   • Roles and Responsibilities: Clarifies the shared responsibilities between cloud service providers and cloud service customers.
10. ISO/IEC 27018: ISO/IEC 27018 is a standard that provides guidelines for protecting personally identifiable information (PII) in public clouds acting as PII processors. It is an extension of ISO/IEC 27002 and aligns with the principles of ISO/IEC 29100 (Privacy Framework). This standard focuses on ensuring that cloud service providers implement adequate controls to protect PII and comply with applicable privacy regulations.
    • PII Protection: Focuses on protecting personally identifiable information (PII) in public clouds acting as PII processors.
    • PII Processor Obligations: Addresses consent, control, transparency, data subject rights, and data breach notification requirements.
    • Security Controls: Recommends specific security controls for protecting PII in cloud environments.

11. ISO/IEC 27019: ISO/IEC 27019 provides guidelines for information security management specific to the energy utility industry, addressing the unique security requirements of process control systems used in this sector. This standard extends the controls defined in ISO/IEC 27002 and tailors them to the specific needs of energy utilities, including power generation, transmission, and distribution.
    • Energy Sector: Provides guidelines for information security management systems for the process control systems used by the energy industry.
    • Sector-Specific Controls: Tailors the general controls from ISO/IEC 27002 to the specific needs of the energy sector, including power generation, transmission, and distribution.
    • Operational Technology (OT): Focuses on securing both IT and OT environments within energy utilities.

These standards help organizations comprehensively address information security risks, enhance their security posture, and ensure compliance with regulatory and industry-specific requirements.