A Industry Security Notice (ISN) is an official document that tells people in industry about important instructions, guidance or other information relating to security.
Important notice
ISN 2014/04 Farnborough International Air Show 2014: exhibition clearances has been removed
ISN 2014/01: Government Security Classification Scheme updated April 2014
ISN 2011/05 Defence & Security Equipment International (DSEi) 2011: exhibition clearances has been removed
ISN 2011/02: incident report has been superseded by 2011/07: incident reporting
ISN 2011/03: Nato personnel security clearances has been superseded by 2014/03: Procedure for UK contractors to obtain Nato personnel security clearances
Published 7 September 2010 Last updated 13 March 2024 +show all updates
Added: Advance publication of DEFSTAN 05-138 (Issue 4).
Added: The National Security Act 2023.
Added 'Arrangements for the Handling and Transmission of Classified and Protected Information Concerning the Canadian Surface Combatant Frigate and UK Type 26 Frigate' and 'Arrangements for the Handling and Transmission of Defence Classified Information Concerning the Australian Hunter Class Frigate and UK Type 26 Frigate'.
Removed 'Definition of MOD Identifiable Information', superseded by existing policy.
Removed 'Definition of MOD Identifiable Information'.
Added 'Retention of documents following conclusion/termination of a UK MOD contract'.
Added 'Network Gas Supply Emergency (NGSE) Priority Listing Category B application for Defence Industry'.
Updated 'Security Aspects Letters and Contractual Security Conditions'.
Added: 'Requirement for defence contractors to report all security incidents affecting defence-related classified material to the MOD' ISN 2023/11, and 'Security Aspects Letters and Contractual Security Conditions' ISN 2023/12.
Removal of ISNs: 2022/07, superseded by 2023/05. 2020/06, superseded by existing policy. 2017/03, superseded by 2023/05. 2017/01, superseded by 2023/10. 2016/04, no longer current. 2016/03, no longer current. 2015/04, no longer current. 2015/02, superseded by existing policy. 2015/01, superseded by existing policy. 2011/04, superseded by existing policy. 2011/01, superseded by 2022/06. 2010/03, superseded by existing policy. 2010/01, superseded by existing policy.
Added: Arrangements for the registration and assurance of supplier systems processing MOD information.
Updated 'Secure by Design Requirements'.
Updated 'Security Aspects Letters and Contractual Security Conditions'.
Added: 'Publication of revised Government Security Classifications Policy'
Updated: Subcontracting or Collaborating on Classified UK MOD Programmes
Added: 'Requirement for defence contractors to report all security incidents affecting defence-related classified material to the MOD', ISN 2023/05.
Added: ISN 2023/04 Electronic Movement of OFFICIAL-SENSITIVE MOD Identifiable Information.
'Control and procedures for effective system patching and update' updated.
Added 'MOD Facility Security Clearance (FSC) policy and guidance for UK Defence contractors and MOD Contracting Authorities'.
Updated ISN 2023/01 'Security Aspects Letters and Contractual Security Conditions'.
'Security Aspects Letters and Contractual Security Conditions' added.
