What is the main purpose of ISO 27001?

The primary purpose of ISO 27001 is to maintain and improve information security management systems. This standard provides a framework for organizations to manage sensitive information, ensuring its confidentiality, integrity, and availability. ISO 27001 lays out the requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS), which is essential for managing information security risks and protecting valuable data from threats. By achieving ISO 27001 certification, organizations demonstrate their commitment to information security best practices, helping to build trust with stakeholders and comply with legal and regulatory obligations related to data protection.

The other options do not align with the focus of ISO 27001. For instance, guidelines for financial auditing or standards for marketing practices do not address information security, and food safety regulations are unrelated to the management of information and data security. This illustrates the targeted nature of ISO 27001, distinguishing it from standards that pertain to entirely different areas of organizational management.