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What is EN ISO 27139:2011?

EN ISO 27139:2011 is a technical standard that provides guidelines and requirements for the development and implementation of an information security management system (ISMS) in organizations. An ISMS is a systematic approach to managing sensitive company data, ensuring its confidentiality, integrity, and availability. This standard was introduced to help organizations establish and maintain effective information security practices.

The Importance of EN ISO 27139:2011

Implementing EN ISO 27139:2011 is crucial for organizations to protect their critical information assets and minimize potential risks. The standard sets out a framework for identifying and assessing various types of risks associated with information security. It also provides guidance on designing and implementing controls to mitigate these risks effectively. By adhering to these guidelines, organizations can ensure the confidentiality, integrity, and availability of their information, as well as safeguard their reputation and stakeholder trust.

The Elements of EN ISO 27139:2011

The standard consists of several key elements that organizations need to consider when implementing an ISMS. These include:

Policies and Procedures: Organizations should develop comprehensive policies and procedures to guide employees in handling sensitive information securely. These policies should be regularly reviewed and updated to address evolving threats and compliance requirements.

Risk Management: Identifying and assessing risks is a fundamental step in protecting information assets. EN ISO 27139:2011 provides guidance on conducting risk assessments, prioritizing risks, and selecting appropriate controls to address identified risks.

Training and Awareness: Employees play a crucial role in maintaining information security. Organizations should provide regular training and awareness programs to educate employees about their responsibilities, best practices, and the potential consequences of security breaches.

Incident Response: Timely detection and response to security incidents are critical. Organizations should establish procedures for reporting incidents, investigating them, and implementing corrective actions to prevent future occurrences.

Monitoring and Measurement: Continuous monitoring and measurement of the ISMS's performance are essential to ensure its effectiveness over time. Regular internal audits and management reviews help identify areas for improvement and ensure compliance with the standard's requirements.


EN ISO 27139:2011 provides a comprehensive framework for managing information security risks in organizations. By implementing this standard, organizations can enhance their ability to protect sensitive data, maintain stakeholder trust, and comply with legal and regulatory requirements. Compliance with EN ISO 27139:2011 is an ongoing process that requires regular updates, continuous monitoring, and a commitment from all levels of the organization. Investing in information security is crucial in today's digital age where cyber threats continue to evolve, and the impact of security breaches can be devastating.


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