Topic

Common cable bundles and conduits

Applicable to

Secret

History

Priority

must not

Mar 2023

SECRET cables, when bundled together or run in conduit, are run exclusively in their own individual cable bundle or conduit.

An existing control relating to use of individual ‘conduits’ for SECRET and TOP SECRET cabling was amended to ‘cable bundles and conduits’ for SECRET systems.

Dec 2021

SECRET and TOP SECRET systems belong exclusively to their own cable groups.

Miscellaneous changes were made to rationale and security controls throughout the publication. This included:

• A review from the Using the Information Security Manual chapter through to the Guidelines for Media chapter.

• Security controls suitable for all audiences have been identified with the ‘All’ applicability marking while additional security controls suitable for just government audiences have been identified with the O, P, S and TS applicability markings.

• Security controls suitable for specific classifications have been amended to include their classification(s) in the wording of the security controls to reduce the reliance on applicability markings to confer suitability.

• Tables in security controls have been converted into prose to allow for inclusion in the SSP annex template and the XML list of security controls.

• The use of ‘official’ and ‘highly classified’ terminology has been replaced with specific classifications to remove ambiguity.

• Security controls relating to high assurance ICT equipment have had their applicability narrowed to ‘S, TS’ reflecting that they are intended for the protection of SECRET and TOP SECRET systems and data.

Mar 2021

The cable groups in the following table are used (see source document for referenced table).

Security control 0187 was amended to ensure consistency of terminology.

Jan 2021

The approved group combinations for cables in the following table are used (see source document for referenced table).

2015

Agencies must not deviate from the approved group combinations for cables as indicatedbelow.

2010

Agencies must not deviate from the approved group combinations for cable classifications asindicated below.

2008

Agencies must not deviate from the approved combinations for cable classifications sharing a common conduit as indicated below.