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by Meryam Sahin
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About this chapterThis chapter requires organizations to understand their environment and define the scope of the ISMS. It contains four sub-clauses.
4.1 Understanding the organization and its context
  • The organization must determine external and internal issues that are relevant to its purpose and affect its ability to achieve the intended outcomes of the ISMS.
  • This could include regulatory requirements, market conditions, contractual obligations, cultural factors, and technological changes.
4.2 Understanding the needs and expectations of interested parties
  • Identify stakeholders (customers, regulators, suppliers, employees, etc.) that are relevant to the ISMS.
  • Determine their requirements regarding information security.
4.3 Determining the scope of the ISMS
  • Define the boundaries and applicability of the ISMS.
  • Consider external/internal issues, interested parties, and interfaces/dependencies with other organizations.
  • The scope must be documented. (MANDATORY!)
4.4 Information security management system
  • The organization must establish, implement, maintain, and continually improve the ISMS according to the requirements of ISO/IEC 27001.