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Writing an incident response plan your team will actually use

An incident response plan only helps if people can follow it at 2am. Keep it short, specific and practised.

Published November 9, 2026 · General information, not legal or audit advice

What the plan is for

When something goes wrong, the plan tells people who is in charge, who to call, what to do first and what to record. Auditors ask for it, and so do customers in security reviews.

What to put in it

  • Roles: an incident lead, a technical lead, a communications owner, with deputies.
  • Severity levels: two to four, each with a plain description and who must be told.
  • First steps: contain, preserve evidence, start a timeline.
  • Notification: which customers, regulators and partners must be told, and by when. Contracts and laws set deadlines.
  • Contacts: names and numbers that work outside office hours.
  • After the incident: a short review of what happened and what changes.

Keep it short

A plan of a few pages that people know beats a long document nobody has opened. Put detailed technical runbooks in separate documents and link to them.

Practise it

Run a tabletop exercise at least once a year: walk through a realistic scenario, such as ransomware or a lost laptop, and note what was unclear. Record who took part and the gaps you found; that record is evidence an auditor will ask for.

In Doniastack

Incidents are logged with severity and reporting deadlines, and tabletop exercises are recorded with their outcomes and gaps, so the plan and the proof live together.

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