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CISO Times

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The CISO Decision Brief

How do we…

How do we decide what documented information our ISMS needs and keep it under control?

6 decision pointsThe pack behind this answer: ISO 27001 Implementation & Certification Readiness

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The short answer

Recommendation
Map every item the standard requires to a document or record you already hold, write procedures only where a process fails without one, and control documents and records differently. Set where each is kept, who may change it and how long it is kept, then trace a sample.
Reasoning
Clause 7.5 is a test of control, not of volume. Auditors find drafts in use, missing approvals, documents past their review date and procedures that describe work nobody does. A short set of documents that are approved, in date, easy to find and used passes more easily than a thick manual. Documents and records need different treatment: documents are revised, records are kept as they were.
Considerations
  • The standard's text is paywalled. Clause 7.5 is described from the pack's checklist and public guides, which are secondary.
  • Public guides differ on whether a written document-control procedure is mandatory. A short one is the safe form.
  • The keep periods in the pack's records table are placeholders. Your law, contracts and risks set yours.
  • A provider's own documents count only if you can see them and hold a copy that is under your control.

The decision, step by step

Select any step for the reasoning behind it and where the pack covers it.

  • Start
  • Step
  • Decision
  • Outcome
  • Loop back

Keyboard: Tab to a step, arrow keys move along the flow, Enter pins its explanation, + and − zoom, 0 fits the diagram, Esc closes. The text version below has the same content.

Where a step quotes a number, it is the default in the CISO Times pack. Your own standard may set a different one.

Read as text

The same flow written out: each step, its reasoning and where the pack covers it. 20 steps.
  1. Start

    We must show our ISMS documents and records are controlled

    Clause 7.5 asks for the documented information the standard requires and the information you decide the ISMS needs to be effective. It then asks that it is identified, approved, available, protected, retained and disposed of. The decision is how much to write down and how tightly to control it.

    In the pack

  2. Step

    List what the standard requires and what you already hold

    The pack's checklist names 16 items of documented information the standard requires, by clause, and the documents and records auditors commonly expect for Annex A controls. Against each, write the document or record you already have, wherever it lives. Existing registers, tickets and tool exports often count.

    In the pack

  3. Decision

    Does a document or record already cover each required item?

    One document can cover several items if it holds everything each one needs. The checklist accepts a combined policy or a tool export as a substitute, if it is approved and under control. If you have not checked every row, answer no.

    In the pack

  4. Step

    Point to it, or write the shortest document that meets the test

    Name the existing document against each item. Where nothing exists, write the shortest document that passes the checklist's 'pass when' test. The pack says a small organisation can hold the scope, roles, risk method and objectives in one short ISMS manual, as long as each item is there, approved and used.

    In the pack

  5. Decision

    Would a process go wrong if its steps were not written down?

    The standard lets you decide what else the ISMS needs in writing. A procedure earns its place where mistakes are costly, several people do the task, or a customer or regulator expects it. Writing procedures only to please an auditor produces shelfware. If you are unsure for a risky process, answer yes.

    In the pack

  6. Step

    Write a short procedure from how the work is really done

    Keep it to the steps, the roles and the records the process leaves, and link it to the policy that sets the rule. A procedure that describes work nobody does is a finding. Name its owner and put it in the same register as the other documents.

    In the pack

  7. Step

    For each document: give an ID, version, owner, approver, review date

    Documents say how work is done and are revised. Records, covered next, show it happened and are kept as they were. Give each document an ID that never changes, major and minor versions, an approver who did not write it and a review date. Publish only the current approved version in one place, withdraw and archive old ones, and note its format and keep it readable.

    In the pack

  8. Step

    For each record: decide where it is kept, who owns and may change it

    For each record type name the system, the owner, who can read it and who can alter it. A record that shows a control operated should not be editable by the people whose work it shows. Check that you can retrieve it for the period an auditor will sample. Keep each record readable for as long as it is retained.

    In the pack

  9. Decision

    Do you rely on documents from outside, such as a supplier report?

    Documented information of external origin that the ISMS needs, such as a provider's certificate, audit report or a customer's requirement, should be identified and controlled too (secondary sources on clause 7.5.3). The pack tells you to name a provider's document and where you hold your copy, and to ask for its records.

    In the pack

  10. Step

    List each with its date, where your copy is kept and who may see it

    Note the issuer, the period it covers, the date you received it and any terms on sharing. A report held in someone's inbox is not under control. Replace it when a new one arrives and keep the old one if the audit period needs it.

    In the pack

  11. Step

    Keep controlled documents in one place with access rules

    Say where the current version lives, who may read it and who may change it. A shared folder with read-only rights can be the library for a small organisation. Printed or downloaded copies are uncontrolled, and the document should say so.

    In the pack

  12. Decision

    Does a law, a contract or an investigation need set a keep period?

    Retention and disposal are part of control. Some records must be kept for a period set by law or contract, and personal data must not be kept longer than its purpose needs. If you do not know, ask legal or compliance. The register of legal and contractual requirements is where such periods are found.

    In the pack

  13. Step

    Set the keep period from that duty and record where it comes from

    Where several duties apply, take the longest that is lawful and write down the source. Name who deletes or archives at the end. The pack's records table shows the shape: the record, where it is held and the minimum retention. Its periods are placeholders for you to replace.

    In the pack

  14. Step

    Choose a keep period yourself and write the reason

    With no outside duty, keep each type as long as you need it to investigate, to show a control operated across the audit period and to meet your own review cycle. Write the reason down, name who disposes of it and review the period when your risks change.

    In the pack

  15. Decision

    Are documents already past their review date?

    A document that is in force but past its review date is a common finding. The pack keeps such a document in force while its review is pending, and escalates it. Expect an auditor to ask why the review is late. If you have not checked the register, answer yes.

    In the pack

  16. Step

    Review them in order of risk, then keep the dates

    Start with the documents that rules and audits rest on: the policy, the risk method and the access, incident and backup standards. Record a review even when it changes nothing. The question on recovering overdue policies goes into more detail.

    In the pack

  17. Step

    Trace a sample: current, approved, in use and easy to find

    Pick a few items from the checklist and test the four things it tests: it exists, it is approved where that applies, it is under control, and there is evidence of use. Ask a person who does the work to find the current version without help. The auditor will do the same.

    In the pack

  18. Decision

    Did the sample find a draft in use, a missing approval or an old copy?

    Any one of these means control is not yet reliable. A draft that people follow, an approval nobody can show, are the kind of gap the checklist says auditors reliably find. A superseded copy still in circulation breaks the pack's one-published-copy rule. If you did not sample, answer yes.

    In the pack

  19. Step

    Fix them, withdraw the old copies, then sample again

    Approve or withdraw the draft, find the missing approval or redo it, and remove old copies from every place they were put. Then take a fresh sample. Repeat until a sample passes.

    In the pack

  20. Outcome

    Documented information decided, controlled and sampled

    Keep the register and the result of the last sample. Do not say the ISMS is complete because every row of the checklist has an entry, or count documents as maturity. The standard asks that what you hold is approved, available, protected and used.

    In the pack

Practical checklist

  1. Map each required item to a document or record, and write the shortest document where none exists.
  2. Write procedures only for processes that fail, or are expected by a customer or regulator, without one.
  3. Give each document an ID, version, owner, approver and review date, and publish one current version.
  4. Decide where each record is kept, who owns it and who may change it.
  5. List external documents you rely on, with the date and where your copy is kept.
  6. Set keep periods and disposal, and trace a sample of items to find what is missing.

Evidence to have ready

  • The document and record register, with owners, versions and review dates.
  • The retention rules by record type, with the duty each comes from.
  • The result of the last sample and the fixes made.
  • Approval records for the documents in the sample.