Skip to content
Organisational controls
ISO 27001A.5.24

ISO 27001 Annex A 5.24 Information security incident management planning and preparation

What it says

The organization shall plan and prepare for managing information security incidents by defining, establishing and communicating information security incident management processes, roles and responsibilities.

Quoted as published. Everything else on this page is written by Control Stack.

What it means

In plain English

Ensure your organisation is ready to manage security incidents with clear processes and responsible roles.

This control is about getting ready to handle information security incidents. It's like having a fire drill plan, but instead of fire, it's for data breaches or hacking attempts. If you don't prepare, small problems can quickly become big disasters, potentially harming your reputation and finances.

Why it matters

Without incident management planning, unclear roles and processes delay detection and containment, increasing impact, costs, reputational harm and compliance breaches.

How to implement

  1. The IT manager should develop a clear incident response plan.

    They can do this by outlining the steps to take during an incident, including who should be contacted first, what actions to initiate, and how to document the incident. This should follow guidelines from ISO 27002:2022 and consider any specific Australian laws like the Privacy Act 1988.

  2. HR should identify and train appropriate team members for incident responses.

    This involves selecting staff who are capable and trustworthy, providing them with the right training and certification programs, and ensuring ongoing skill development to keep pace with current threats.

  3. The board should approve and support the incident management policy.

    Board members need to understand the policy implications and ensure there are enough resources, including budget and time, allocated for effective incident management within the organisation.

  4. The office manager can establish a simple reporting process for employees to follow.

    This could be as straightforward as creating an internal email address for reporting suspected security incidents or using an online form, ensuring alignment with ISO 27002:2022 standards.

  5. The IT team should implement systems to monitor and detect security incidents.

    They can use tools that alert them to suspicious activities. This involves setting up automated alerts and regularly reviewing logs to catch potential threats early.

Keep it running

Maintain incident playbooks, roles, escalation paths and contact lists; run regular tabletop drills and post-incident reviews to keep procedures current.

Evidence and audit

  1. Check 1 of 3What an auditor asks for

    Ask for

    The incident response plan document.

    Look at

    The steps outlined for managing incidents and the roles assigned to each step. Good plans are comprehensive, with clear actions, roles, and responsibilities defined.

  2. Check 2 of 3What an auditor asks for

    Ask for

    To see incident reports from past security events. Review how the incidents were handled from start to finish, including communication and conclusion. Good reports are thorough, consistent, and demonstrate clear follow-up actions.

  3. Check 3 of 3What an auditor asks for

    Ask for

    Documents outlining the reporting procedures for security incidents. Examine the clarity and accessibility of these procedures to staff. Good procedures are easy to understand and consistently prompt timely reporting and actions.

    Look at

    How these logs are maintained and what actions were recorded during past incidents. Good logs are detailed, with timestamps, actions taken, and outcomes noted accurately.

Mappings

Closest match in ISO/IEC 42001: A.8.4, Document a plan for communicating incidents to AI system users, which this control covers in full and more.

ISO 42001

ISO/IEC 42001: 2 mappings

Essential Eight

ASD Essential Eight: 8 mappings

ASD ISM

ASD Information Security Manual: 16 mappings

ASD Essentials

ASD Essentials for enterprise IT: 3 mappings

Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.

Get help with this control

ISO 27001 training

Mindset Cyber runs PECB-accredited ISO/IEC 27001 training that maps directly to the controls in this library.