Assessment and Decision on Information Security Events is a key control in the ISO 27001 standard. It deals with how an organisation handles security issues and decides what to do about them. This control is about having a plan for security events, which are things like a suspicious email, a strange network activity, or a user who can’t log in. It’s a way to make sure that when something happens, the organisation can quickly figure out if it’s a real problem and then decide how to fix it. This process helps to stop small issues from becoming big problems.
Examples
- A suspicious email: A user gets an email that looks like it’s from their bank but has a strange link. This is a security event. The organisation’s plan should tell the user to report it and the security team how to check it out. They would then decide if it’s a phishing attempt and what to do next.
- Failed login attempts: Someone tries to log in to a system many times with the wrong password. This is an event. The plan would say to look at the number of failed attempts and decide if it’s a simple user mistake or a possible brute-force attack.
Context
This control is important for keeping information safe. It makes sure that all security events are reviewed properly. It helps an organisation learn from past problems and make its security even better. By having a clear plan, the organisation can respond to threats quickly and in a way that is consistent every time. It’s a way to be ready for the unexpected and protect important information from being lost or stolen.
Relevant ISO 27001 Annex A Controls
The following controls from the ISO/IEC 27001:2022 standard are related to Assessment And Decision On Information Security Events:
- ISO 27001:2022 Annex A 5.25 Assessment And Decision On Information Security Events: This is the main control for Assessment And Decision On Information Security Events. This control sets out the guidance for assessing and making decisions on information security events.
- ISO 27001:2022 Annex A 5.24 Information Security Incident Management Planning and Preparation: This control gives guidance on setting up incident management to handle information security events.
- ISO 27001:2022 Annex A 5.26 Response To Information Security Incidents: This control sets the rules for responding for information security events.
- ISO 27001:2022 Annex A 5.27 Learning From Information Security Incidents: This control requires organisations to lear from information security events and make improvements.
