IEC 62443-2-1:2010

Industrial communication networks - Network and system security - Part 2-1: Establishing an industrial automation and control system security program

IEC 62443-2-1:2010 defines the elements necessary to establish a cyber security management system (CSMS) for industrial automation and control systems (IACS) and provides guidance on how to develop those elements. This standard uses the broad definition and scope of what constitutes an IACS described in IEC/TS 62443-1-1. The elements of a CSMS described in this standard are mostly policy, procedure, practice and personnel related, describing what shall or should be included in the final CSMS for the organization. This bilingual version (2012-04) corresponds to the monolingual English version, published in 2010-11.

Réseaux industriels de communication - Sécurité dans les réseaux et les systèmes - Partie 2-1: Etablissement d'un programme de sécurité pour les systèmes d'automatisation et de commande industrielles

La CEI 62443-2-1:2010 définit les éléments nécessaires à l'établissement d'un système de gestion de la cyber-sécurité (CSMS) pour les systèmes d'automatisation et de commande (IACS) industriels et fournit des indications sur la façon de développer ces éléments. La présente norme utilise, au sens large, la définition et le domaine d'application de ce qui constitue un IACS décrit dans la CEI/TS 62443-1-1. Les éléments d'un CSMS décrits dans la présente norme sont essentiellement liés aux politiques, aux procédures, aux pratiques et au personnel; ils correspondent à ce doit être inclus ou à ce qu'il convient d'inclure dans le CSMS final de l'organisation. La présente version bilingue (2012-04) correspond à la version anglaise monolingue publiée en 2010-11.

General Information

• Status: Published
• Publication Date: 09-Nov-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.05 - Multilayer applications
• Technical Committee: TC 65 - Industrial-process measurement, control and automation
• Drafting Committee: WG 10 - TC 65/WG 10
• Current Stage: PPUB - Publication issued
• Start Date: 15-Oct-2010
• Completion Date: 10-Nov-2010

Standards Content (Sample)

IEC 62443-2-1 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Network and system security –
Part 2-1: Establishing an industrial automation and control system security
program
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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IEC 62443-2-1 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Network and system security –
Part 2-1: Establishing an industrial automation and control system security
program
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XG
ICS 25.040.40; 33.040 ISBN 978-2-88912-206-6
– 2 – 62443-2-1 Ó IEC:2010(E)
CONTENTS
FOREW ORD . 5
0 INTRODUCTION . 7
0.1 Ov erv iew . 7
0.2 A cyber security management system for IACS . 7
0.3 Relationship between this document and ISO/IEC 17799 and ISO/IEC 27001 . 7
1 Sc o pe . 9
2 Normative references . 9
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms and acronyms . 14
3.3 Conventions . 16
4 Elements of a cyber security management system . 16
4.1 Ov erv iew . 16
4.2 Category: Risk analysis . 18
4.2.1 Description of category . 18
4.2.2 Element: Business rationale . 18
4.2.3 Element: Risk identification, classification and assessment . 18
4.3 Category: Addressing risk with the CSMS . 20
4.3.1 Description of category . 20
4.3.2 Element group: Security policy, organization and awareness . 20
4.3.3 Element group: Selected security countermeasures . 25
4.3.4 Element group: Implementation . 32
4.4 Category: Monitoring and improving the CSMS . 36
4.4.1 Description of category . 36
4.4.2 Element: Conformance . 36
4.4.3 Element: Review, improve and maintain the CSMS . 37
Annex A (informative) Guidance for developing the elements of a CSMS . 39
Annex B (informative) Process to develop a CSMS . 140
Annex C (informative) Mapping of requirements to ISO/IEC 27001 . 148
Bibliography . 156

Figure 1 – Graphical view of elements of a cyber security management system . 17
Figure 2 – Graphical view of category: Risk analysis . 18
Figure 3 – Graphical view of element group: Security policy, organization and
awareness . 20
Figure 4 – Graphical view of element group: Selected security countermeasures . 25
Figure 5 – Graphical view of element group: Implementation . 32
Figure 6 – Graphical view of category: Monitoring and improving the CSMS . 36
Figure A.1 – Graphical view of elements of a cyber security management system . 40
Figure A.2 – Graphical view of category: Risk analysis . 40
Figure A.3 – Reported attacks on computer systems through 2004 (source: CERT) . 44
Figure A.4 – Sample logical IACS data collection sheet . 57
Figure A.5 – Example of a graphically rich logical network diagram . 59

62443-2-1 Ó IEC:2010(E) – 3 –
Figure A.6 – Graphical view of element group: Security policy, organization, and
awareness . 66
Figure A.7 – Graphical view of element group: Selected security countermeasures . 82
Figure A.8 – Reference architecture alignment with an example segmented
architecture . 90
Figure A.9 – Reference SCADA architecture alignment with an example segmented
architecture . 93
Figure A.10 – Access control: Account administration . 95
Figure A.11 – Access control: Authentication . 98
Figure A.12 – Access control: Authorization . 103
Figure A.13 – Graphical view of element group: Implementation . 106
Figure A.14 – Security level lifecycle model: Assess phase . 109
Figure A.15 – Corporate security zone template architecture. 112
Figure A.16 – Security zones for an example IACS . 113
Figure A.17 – Security level lifecycle model: Develop and implement phase . 116
Figure A.18 – Security level lifecycle model: Maintain phase . 120
Figure A.19 – Graphical view of category: Monitoring and improving the CSMS . 133
Figure B.1 – Top level activities for establishing a CSMS . 140
Figure B.2 – Activities and dependencies for activity: Initiate CSMS program. 142
Figure B.3 – Activities and dependencies for activity: High-level risk assessment . 143
Figure B.4 – Activities and dependencies for activity: Detailed risk assessment . 144
Figure B.5 – Activities and dependencies for activity: Establish security policy,
organization and awareness . 144
Figure B.6 – Training and assignment of organization responsibilities . 145
Figure B.7 – Activities and dependencies for activity: Select and implement
countermeasures . 146
Figure B.8 – Activities and dependencies for activity: Maintain the CSMS . 147

Table 1 – Business rationale: Requirements . 18
Table 2 – Risk identification, classification and assessment: Requirements . 19
Table 3 – CSMS scope: Requirements . 21
Table 4 – Organizing for security: Requirements . 22
Table 5 – Staff training and security awareness: Requirements . 22
Table 6 – Business continuity plan: Requirements . 23
Table 7 – Security policies and procedures: Requirements . 24
Table 8 – Personnel security: Requirements . 26
Table 9 – Physical and environmental security: Requirements. 27
Table 10 – Network segmentation: Requirements . 28
Table 11 – Access control – Account administration: Requirements . 29
Table 12 – Access control – Authentication: Requirements . 30
Table 13 – Access control – Authorization: Requirements . 31
Table 14 – Risk management and implementation: Requirements . 33
Table 15 – System development and maintenance: Requirements . 33
Table 16 – Information and document management: Requirements . 34
Table 17 – Incident planning and response: Requirements . 35

– 4 – 62443-2-1 Ó IEC:2010(E)
Table 18 – Conformance: Requirements . 37
Table 19 – Review, improve and maintain the CSMS: Requirements . 38
Table A.1 – Typical likelihood scale . 52
Table A.2 – Typical consequence scale . 54
Table A.3 – Typical risk level matrix . 55
Table A.4 – Example countermeasures and practices based on IACS risk levels . 107
Table A.5 – Example IACS asset table with assessment results . 110
Table A.6 – Example IACS asset table with assessment results and risk levels . 110
Table A.7 – Target security levels for an example IACS . 114
Table C.1 – Mapping of requirements in this standard to ISO/IEC 27001 references . 148
Table C.2 – Mapping of ISO/IEC 27001 requirements to this standard . 152

62443-2-1 Ó IEC:2010(E) – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
NETWORK AND SYSTEM SECURITY –
Part 2-1: Establishing an industrial automation
and control system security program

FOREWORD
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...

IEC 62443-2-1 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Network and system security –
Part 2-1: Establishing an industrial automation and control system security
program
Réseaux industriels de communication – Sécurité dans les réseaux et les
systèmes –
Partie 2-1: Etablissement d’un programme de sécurité pour les systèmes
d’automatisation et de commande industrielles

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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International Standards for all electrical, electronic and related technologies.

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latest edition, a corrigenda or an amendment might have been published.

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IEC 62443-2-1 ®
Edition 1.0 2010-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Network and system security –

Part 2-1: Establishing an industrial automation and control system security

program
Réseaux industriels de communication – Sécurité dans les réseaux et les

systèmes –
Partie 2-1: Etablissement d’un programme de sécurité pour les systèmes

d’automatisation et de commande industrielles

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XG
CODE PRIX
ICS 25.040.40; 33.040 ISBN 978-2-88912-037-6

– 2 – 62443-2-1  IEC:2010
CONTENTS
FOREWORD . 5
0 INTRODUCTION . 7
0.1 Overview . 7
0.2 A cyber security management system for IACS . 7
0.3 Relationship between this standard and ISO/IEC 17799 and ISO/IEC 27001 . 7
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms and acronyms . 14
3.3 Conventions . 16
4 Elements of a cyber security management system . 16
4.1 Overview . 16
4.2 Category: Risk analysis . 18
4.2.1 Description of category . 18
4.2.2 Element: Business rationale . 18
4.2.3 Element: Risk identification, classification and assessment . 18
4.3 Category: Addressing risk with the CSMS . 20
4.3.1 Description of category . 20
4.3.2 Element group: Security policy, organization and awareness . 20
4.3.3 Element group: Selected security countermeasures . 25
4.3.4 Element group: Implementation . 32
4.4 Category: Monitoring and improving the CSMS. 36
4.4.1 Description of category . 36
4.4.2 Element: Conformance . 36
4.4.3 Element: Review, improve and maintain the CSMS . 37
Annex A (informative) Guidance for developing the elements of a CSMS . 39
Annex B (informative) Process to develop a CSMS . 140
Annex C (informative) Mapping of requirements to ISO/IEC 27001 . 148
Bibliography . 156

Figure 1 – Graphical view of elements of a cyber security management system . 17
Figure 2 – Graphical view of category: Risk analysis. 18
Figure 3 – Graphical view of element group: Security policy, organization and
awareness . 20
Figure 4 – Graphical view of element group: Selected security countermeasures . 25
Figure 5 – Graphical view of element group: Implementation . 32
Figure 6 – Graphical view of category: Monitoring and improving the CSMS . 36
Figure A.1 – Graphical view of elements of a cyber security management system . 40
Figure A.2 – Graphical view of category: Risk analysis . 40
Figure A.3 – Reported attacks on computer systems through 2004 (source: CERT) . 44
Figure A.4 – Sample logical IACS data collection sheet . 57
Figure A.5 – Example of a graphically rich logical network diagram . 59

62443-2-1  IEC:2010 – 3 –
Figure A.6 – Graphical view of element group: Security policy, organization, and
awareness . 66
Figure A.7 – Graphical view of element group: Selected security countermeasures. 82
Figure A.8 – Reference architecture alignment with an example segmented
architecture. 90
Figure A.9 – Reference SCADA architecture alignment with an example segmented
architecture. 93
Figure A.10 – Access control: Account administration . 95
Figure A.11 – Access control: Authentication . 98
Figure A.12 – Access control: Authorization . 103
Figure A.13 – Graphical view of element group: Implementation . 106
Figure A.14 – Security level lifecycle model: Assess phase. 109
Figure A.15 – Corporate security zone template architecture . 112
Figure A.16 – Security zones for an example IACS . 113
Figure A.17 – Security level lifecycle model: Develop and implement phase . 116
Figure A.18 – Security level lifecycle model: Maintain phase . 120
Figure A.19 – Graphical view of category: Monitoring and improving the CSMS . 133
Figure B.1 – Top level activities for establishing a CSMS . 140
Figure B.2 – Activities and dependencies for activity: Initiate CSMS program . 142
Figure B.3 – Activities and dependencies for activity: High-level risk assessment . 143
Figure B.4 – Activities and dependencies for activity: Detailed risk assessment . 144
Figure B.5 – Activities and dependencies for activity: Establish security policy,
organization and awareness . 144
Figure B.6 – Training and assignment of organization responsibilities . 145
Figure B.7 – Activities and dependencies for activity: Select and implement
countermeasures . 146
Figure B.8 – Activities and dependencies for activity: Maintain the CSMS . 147

Table 1 – Business rationale: Requirements . 18
Table 2 – Risk identification, classification and assessment: Requirements . 19
Table 3 – CSMS scope: Requirements . 21
Table 4 – Organizing for security: Requirements . 22
Table 5 – Staff training and security awareness: Requirements . 22
Table 6 – Business continuity plan: Requirements . 23
Table 7 – Security policies and procedures: Requirements . 24
Table 8 – Personnel security: Requirements . 26
Table 9 – Physical and environmental security: Requirements . 27
Table 10 – Network segmentation: Requirements . 28
Table 11 – Access control –
...