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Guidance INDUSTRY SECURITY NOTICE (ISN) A list of Industry Security Notices (ISNs) for defence personnel to highlight security changes or information. Get emails about this page DOCUMENTS

REQUIREMENT FOR DEFENCE SUPPLIERS TO REPORT ALL SECURITY INCIDENTS AFFECTING DEFENCE RELATED CLASSIFIED MATERIAL TO THE UK MOD Ref: ISN 2025/03 PDF, 167 KB, 5 pages REVOCATION OF THE

REQUIREMENT FOR REGISTRATION OF SUPPLIER SERVICES PROCESSING MOD INFORMATION Ref: ISN 2025/02 PDF, 113 KB, 2 pages INTERIM PROCESS IN SUPPORT OF DEFCON 658 Ref: ISN 2025/01 PDF, 145 KB, 3

pages SECURITY ASPECTS LETTERS AND CONTRACTUAL SECURITY CONDITIONS Ref: ISN 2024/09 PDF, 254 KB, 16 pages CHANGES TO THE MOD FORM 680 PROCESS TO INCORPORATE US ITAR Ref: ISN 2024/08 PDF, 130

KB, 3 pages UK-AUSTRALIA ARRANGEMENTS FOR THE HANDLING AND TRANSMISSION OF DEFENCE CLASSIFIED INFORMATION Ref: ISN 2024/07 PDF, 144 KB, 4 pages CLOUD SECURITY CONTROL REQUIREMENTS FOR

HANDLING OFFICIAL MOD INFORMATION Ref: ISN 2024/06 PDF, 138 KB, 5 pages THE NATIONAL SECURITY ACT 2023 Ref: ISN 2024/03 PDF, 136 KB, 4 pages THE NATIONAL SECURITY ACT 2023 - ANNEX A Ref: ISN

2024/03 PDF, 6.78 KB, 1 page SUBCONTRACTING OR COLLABORATING ON CLASSIFIED UK MOD PROGRAMMES Ref: ISN 2024/05 PDF, 223 KB, 15 pages ADVANCE PUBLICATION OF DEFSTAN 05-138 (ISSUE 4) Ref: ISN

2024/02 PDF, 112 KB, 2 pages ARRANGEMENTS FOR THE HANDLING AND TRANSMISSION OF CLASSIFIED AND PROTECTED INFORMATION CONCERNING THE CANADIAN SURFACE COMBATANT FRIGATE AND UK TYPE 26 FRIGATE

Ref: ISN 2023/17 PDF, 158 KB, 4 pages RETENTION OF DOCUMENTS FOLLOWING CONCLUSION/TERMINATION OF A UK MOD CONTRACT Ref: ISN 2023/15 PDF, 124 KB, 2 pages NETWORK GAS SUPPLY EMERGENCY (NGSE)

PRIORITY LISTING CATEGORY B APPLICATION FOR DEFENCE INDUSTRY Ref: ISN 2023/14 PDF, 129 KB, 2 pages SECURE BY DESIGN REQUIREMENTS Ref: ISN 2023/09 PDF, 257 KB, 11 pages PUBLICATION OF REVISED

GOVERNMENT SECURITY CLASSIFICATIONS POLICY Ref: ISN 2023/07 PDF, 201 KB, 2 pages This file may not be suitable for users of assistive technology. Request an accessible format. If you use

assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email [email protected]. Please tell us what format you need.

It will help us if you say what assistive technology you use. ELECTRONIC MOVEMENT OF OFFICIAL-SENSITIVE MOD IDENTIFIABLE INFORMATION Ref: ISN 2023/04 PDF, 153 KB, 3 pages CONTROL AND

PROCEDURES FOR EFFECTIVE SYSTEM PATCHING AND UPDATE Ref: ISN 2023/03 PDF, 180 KB, 4 pages MOD FACILITY SECURITY CLEARANCE (FSC) POLICY AND GUIDANCE FOR UK DEFENCE CONTRACTORS AND MOD

CONTRACTING AUTHORITIES Ref: ISN 2023/02 PDF, 137 KB, 3 pages ONGOING PERSONNEL SECURITY REQUIREMENTS FOR DEFENCE CONTRACTORS – AFTERCARE RESPONSIBILITIES Ref: ISN 2022/11 ODT, 34 KB This

file is in an OpenDocument format CLARIFICATION ON REQUIREMENTS FOR REMOTE WORKING WITH MOD MATERIAL Ref: ISN 2022/10 PDF, 136 KB, 5 pages NATIONAL SECURITY VETTING AND SOCIAL NETWORKING

SITES Ref: ISN 2022/06 PDF, 118 KB, 3 pages RELEASE OF JSP 440 TO INDUSTRY Ref: ISN 2022/05 PDF, 117 KB, 2 pages This file may not be suitable for users of assistive technology. Request an

accessible format. If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email [email protected]. Please

tell us what format you need. It will help us if you say what assistive technology you use. BUSINESS CONTINUITY AND RESILIENCE Ref: ISN 2022/01 PDF, 108 KB, 2 pages PERSONNEL SECURITY

REQUIREMENTS – AFTERCARE RESPONSIBILITIES RELATED TO PROVIDING ACCOMMODATION TO FOREIGN NATIONALS Ref: ISN 2022/02 PDF, 141 KB, 3 pages COMPLIANCE WITH CYBER SECURITY REQUIREMENTS FROM OTHER

NATIONS Ref: ISN 2021/03 PDF, 150 KB, 4 pages EXCHANGE OF CLASSIFIED INFORMATION WITH THE EUROPEAN UNION Ref: ISN 2021/01 PDF, 171 KB, 3 pages CANADA/UK INDUSTRIAL SECURITY ARRANGEMENT -

ARRANGEMENTS FOR THE HANDLING AND TRANSMISSION OF CLASSIFIED AND PROTECTED INFORMATION Ref: ISN 2020/05 PDF, 158 KB, 14 pages ENCRYPTION OF MODII AT REST Ref: ISN 2020/07 replaces ISN

2020/03 HTML DART: RISK BALANCE CASE PROCESS Ref: ISN 2018/01 PDF, 189 KB, 8 pages RELEASE OF UK OFFICIAL-SENSITIVE AND EQUIVALENT THIRD PARTY CLASSIFIED MATERIAL TO FOREIGN NON-GOVERNMENT

RECIPIENTS Ref: ISN 2017/07 PDF, 153 KB, 4 pages PROCEDURE FOR UK CONTRACTORS TO OBTAIN NATO PERSONNEL SECURITY CLEARANCES (SUPERSEDES ISN 2011/03) Ref: ISN 2014/03 PDF, 89 KB, 4 pages

DEFENCE TRADE COOPERATION TREATY (DTCT) Ref: ISN 2012/01 PDF, 199 KB DEFENCE TRADE COOPERATION TREATY (DTCT): APPLICATION FORM Ref: ISN 2012/01 Annex A PDF, 838 KB, 11 pages ADVICE ON

PROVIDING NATIONAL SECURITY VETTING (NSV) DETAILS TO NON-GOVERNMENTAL ORGANISATIONS Ref: ISN 2011/06 PDF, 176 KB POLICY TO PROTECT PORTABLE INFORMATION AND COMMUNICATIONS TECHNOLOGY (ICT)

DEVICES AND MEDIA Ref: ISN 2010/04 PDF, 242 KB, 5 pages DETAILS 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

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