What is ISO 27035?
ISO/IEC 27035 is an international standard that provides detailed guidelines to help organizations establish an effective incident management process. It covers all phases, from initial detection to closure and post-incident analysis.
This standard is therefore essential for any organization that wants to strengthen its resilience to internal and external information security threats—and what organization wouldn't want that?
What are the objectives of ISO 27035?
- Prevent cybersecurity incidents by identifying vulnerabilities and potential threats.
- Quickly detect security incidents by implementing effective monitoring systems and procedures.
- Respond appropriately (and quickly!) to incidents in order to minimize their impact.
- Recovering well after an incident means restoring normal operations as quickly as possible.
- Analyze and document incidents to continuously improve the incident management process—and, above all, prevent recurrences.
How is ISO 27035 structured?
ISO/IEC 27035 is structured in several parts, each addressing a different aspect of incident management.
#1 Introduction: Incident Management Principles and Processes
This section provides an overview of the key concepts and fundamental principles of information security incident management. It describes the general steps in the incident management process, from initial preparation to continuous improvement.
#2 Planning and preparation
This section focuses on implementing the tools and resources necessary for (effective) security incident management. It covers:
- staff training and awareness-raising;
- the establishment of policies and procedures;
- the implementation of incident detection and response technologies.
#3 Incident detection and analysis
This section details the methods and tools to be used to detect and analyze security incidents. The text emphasizes one point: it is crucial to have effective monitoring systems AND well-defined processes in place to assess and classify incidents accurately and quickly.
#4 Incident response
This section of the text guides organizations in implementing corrective measures to contain, eradicate, and recover from an incident. It emphasizes the importance of coordination and communication, which are essential during the incident response process.
#5 Learning and continuous improvement
The standard encourages organizations to learn from each incident to strengthen their security posture. It recommends:
- to document all incidents;
- to conduct post-incident analyses;
- adjust policies and procedures accordingly.
The importance of ISO 27035
Although ISO 27035 is (much) less well known than its cousins ISO 27001 and ISO 27002, it nonetheless offers numerous advantages:
- reducing the impact of incidents (business disruptions, financial losses, etc.);
- compliance with the numerous regulations requiring the implementation of incident management processes;
- strengthening organizational resilience through effective incident management;
- Continuous improvement – by analyzing and learning from each incident, organizations can constantly improve their security measures and reduce future risks.
To find out how Tenacy can help you manage your cyber incidents, contact our experts!



