Change of https://www.gov.uk/government/publications/cyber-security-for-defence-suppliers-def-stan-05-138-issue-4

Change description : 2025-12-03 08:00:00: Updated details on Def Stan 05-138, Issue 4. [Guidance and regulation]

Showing diff : 2024-05-23 15:04:48.393833441 +00:00..2025-12-03 08:00:33.978647896 +00:00

Guidance

Cyber security for defence suppliers (Def Stan 05-138, Issue 4)

This defence standard specifies the cyber controls that defence suppliers are required to achieve at each of the 4 cyber risk profile levels that a contract can be assessed at.

From:
Ministry of Defence
Published
23 May 2024
Last updated
3 December 2025 — See all updates

Documents

Defence Standard 05-138, Issue 4: cyber security for defence suppliers

PDF, 722804 KB, 37 pages

Details

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Updates to this page

Published 23 May 2024
Last updated 3 December 2025 href="#full-history">+ show all updates

  1. Updated details on Def Stan 05-138, Issue 4.

  2. First published.

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Update history

2025-12-03 08:00
Updated details on Def Stan 05-138, Issue 4.

2024-05-23 16:03
First published.