ISO/IEC 27017:2015

Information technology — Security techniques — Code of practice for information security controls based on ISO/IEC 27002 for cloud services

ISO/IEC 27017:2015 gives guidelines for information security controls applicable to the provision and use of cloud services by providing: - additional implementation guidance for relevant controls specified in ISO/IEC 27002; - additional controls with implementation guidance that specifically relate to cloud services. This Recommendation | International Standard provides controls and implementation guidance for both cloud service providers and cloud service customers.

Technologies de l'information — Techniques de sécurité — Code de bonnes pratiques pour les contrôles de sécurité de l'information fondés sur l'ISO/IEC 27002 pour les services du nuage

La présente Recommandation | Norme internationale contient des lignes directrices relatives aux mesures de sécurité de l'information applicables à la prestation et à l'utilization de services d'informatique en nuage, par exemple: — des recommandations supplémentaires concernant la mise en œuvre des mesures de sécurité pertinentes spécifiées dans l'ISO/IEC 27002; — des mesures de sécurité supplémentaires avec préconisations de mise en œuvre spécifiquement liées aux services en nuage. La présente Recommandation | Norme internationale fournit des recommandations concernant les moyens de maîtrise et la mise en œuvre destinées aux prestataires de services d'informatique en nuage et à leurs clients.

General Information

• Status: Published
• Publication Date: 29-Nov-2015
• ICS: 03.100.70 - Management systems
• ICS: 35.030 - IT Security
• ICS: 35.040 - Information coding
• Technical Committee: ISO/IEC JTC 1/SC 27 - Information security, cybersecurity and privacy protection
• Drafting Committee: ISO/IEC JTC 1/SC 27/WG 1 - Information security management systems
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 26-Oct-2022

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 27017
First edition
2015-12-15
Information technology — Security
techniques — Code of practice for
information security controls based on
ISO/IEC 27002 for cloud services
Technologies de l'information — Techniques de sécurité — Code de
pratique pour les contrôles de sécurité de l'information fondés sur
l'ISO/IEC 27002 pour les services du nuage
Reference number
ISO/IEC 27017:2015(E)
ISO/IEC 2015
---------------------- Page: 1 ----------------------
ISO/IEC 27017:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2015

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any

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ii © ISO/IEC 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC 27017:2015(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that are members of

ISO or IEC participate in the development of International Standards through technical committees

established by the respective organization to deal with particular fields of technical activity. ISO and IEC

technical committees collaborate in fields of mutual interest. Other international organizations, governmental

and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information

technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of the joint technical committee is to prepare International Standards. Draft International

Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as

an International Standard requires approval by at least 75 % of the national bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

ISO/IEC 27017 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 27, IT Security techniques, in collaboration with ITU-T. The identical text is published as

ITU-T. X.1631 (07/2015).
© ISO/IEC 2015 – All rights reserved iii
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I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n
X.1631
ITU-T
(07/2015)
TELECOMMUNICATION
STANDARDIZATION SECTOR
OF ITU
SERIES X: DATA NETWORKS, OPEN SYSTEM
COMMUNICATIONS AND SECURITY
Cloud computing security – Cloud computing security
design
Information technology – Security techniques –
Code of practice for information security
controls based on ISO/IEC 27002 for cloud
services
Recommendation ITU-T X.1631
---------------------- Page: 4 ----------------------
ITU-T X-SERIES RECOMMENDATIONS
DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY
PUBLIC DATA NETWORKS X.1–X.199
OPEN SYSTEMS INTERCONNECTION X.200–X.299
INTERWORKING BETWEEN NETWORKS X.300–X.399
MESSAGE HANDLING SYSTEMS X.400–X.499
DIRECTORY X.500–X.599
OSI NETWORKING AND SYSTEM ASPECTS X.600–X.699
OSI MANAGEMENT X.700–X.799
SECURITY X.800–X.849
OSI APPLICATIONS X.850–X.899
OPEN DISTRIBUTED PROCESSING X.900–X.999
INFORMATION AND NETWORK SECURITY
General security aspects X.1000–X.1029
Network security X.1030–X.1049
Security management X.1050–X.1069
Telebiometrics X.1080–X.1099
SECURE APPLICATIONS AND SERVICES
Multicast security X.1100–X.1109
Home network security X.1110–X.1119
Mobile security X.1120–X.1139
Web security X.1140–X.1149
Security protocols X.1150–X.1159
Peer-to-peer security X.1160–X.1169
Networked ID security X.1170–X.1179
IPTV security X.1180–X.1199
CYBERSPACE SECURITY
Cybersecurity X.1200–X.1229
Countering spam X.1230–X.1249
Identity management X.1250–X.1279
SECURE APPLICATIONS AND SERVICES
Emergency communications X.1300–X.1309
Ubiquitous sensor network security X.1310–X.1339
PKI related Recommendations X.1340–X.1349
CYBERSECURITY INFORMATION EXCHANGE
Overview of cybersecurity X.1500–X.1519
Vulnerability/state exchange X.1520–X.1539
Event/incident/heuristics exchange X.1540–X.1549
Exchange of policies X.1550–X.1559
Heuristics and information request X.1560–X.1569
Identification and discovery X.1570–X.1579
Assured exchange X.1580–X.1589
CLOUD COMPUTING SECURITY
Overview of cloud computing security X.1600–X.1601
Cloud computing security design X.1602–X.1639
Cloud computing security best practices and guidelines X.1640–X.1659
Cloud computing security implementation X.1660–X.1679
Other cloud computing security X.1680–X.1699
For further details, please refer to the list of ITU-T Recommendations.
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INTERNATIONAL STANDARD ISO/IEC 27017
RECOMMENDATION ITU-T X.1631

Information technology – Security techniques – Code of practice for information security

controls based on ISO/IEC 27002 for cloud services
Summary

Recommendation ITU-T X.1631 | ISO/IEC 27017 provides guidelines for information security controls applicable to the

provision and use of cloud services by providing:

– additional implementation guidance for relevant controls specified in ISO/IEC 27002;

– additional controls with implementation guidance that specifically relate to cloud services.

This Recommendation | International Standard provides controls and implementation guidance for both cloud service

providers and cloud service customers.
History
Edition Recommendation Approval Study Group Unique ID
1.0 ITU-T X.1631 2015-07-14 17 11.1002/1000/12490
____________________

To access the Recommendation, type the URL http://handle.itu.int/ in the address field of your web browser, followed by the

Recommendation's unique ID. For example, http://handle.itu.int/11.1002/1000/11830-en.

Rec. ITU-T X.1631 (07/2015) i
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FOREWORD

The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of

telecommunications, information and communication technologies (ICTs). The ITU Telecommunication

Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical,

operating and tariff questions and issuing Recommendations on them with a view to standardizing

telecommunications on a worldwide basis.

The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes

the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics.

The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1.

In some areas of information technology which fall within ITU-T's purview, the necessary standards are

prepared on a collaborative basis with ISO and IEC.
NOTE

In this Recommendation, the expression "Administration" is used for conciseness to indicate both a

telecommunication administration and a recognized operating agency.

Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain

mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the

Recommendation is achieved when all of these mandatory provisions are met. The words "shall" or some other

obligatory language such as "must" and the negative equivalents are used to express requirements. The use of

such words does not suggest that compliance with the Recommendation is required of any party.

INTELLECTUAL PROPERTY RIGHTS

ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve

the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or

applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of

the Recommendation development process.

As of the date of approval of this Recommendation, ITU had not received notice of intellectual property,

protected by patents, which may be required to implement this Recommendation. However, implementers are

cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB

patent database at http://www.itu.int/ITU-T/ipr/.
 ITU 2015

All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior

written permission of ITU.
ii Rec. ITU-T X.1631 (07/2015)
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CONTENTS
Page

1 Scope .............................................................................................................................................................. 1

2 Normative references...................................................................................................................................... 1

2.1 Identical Recommendations | International Standards ........................................................................ 1

2.2 Additional References ......................................................................................................................... 1

3 Definitions and abbreviations ......................................................................................................................... 1

3.1 Terms defined elsewhere ..................................................................................................................... 1

3.2 Abbreviations ...................................................................................................................................... 2

4 Cloud sector-specific concepts ....................................................................................................................... 2

4.1 Overview ............................................................................................................................................. 2

4.2 Supplier relationships in cloud services .............................................................................................. 2

4.3 Relationships between cloud service customers and cloud service providers ..................................... 3

4.4 Managing information security risks in cloud services ....................................................................... 3

4.5 Structure of this standard ..................................................................................................................... 3

5 Information security policies .......................................................................................................................... 4

5.1 Management direction for information security .................................................................................. 4

6 Organization of information security.............................................................................................................. 5

6.1 Internal organization ........................................................................................................................... 5

6.2 Mobile devices and teleworking .......................................................................................................... 6

7 Human resource security ................................................................................................................................ 6

7.1 Prior to employment ............................................................................................................................ 6

7.2 During employment ............................................................................................................................ 6

7.3 Termination and change of employment ............................................................................................. 7

8 Asset management .......................................................................................................................................... 7

8.1 Responsibility for assets ...................................................................................................................... 7

8.2 Information classification .................................................................................................................... 8

8.3 Media handling .................................................................................................................................... 8

9 Access control ................................................................................................................................................ 8

9.1 Business requirements of access control ............................................................................................. 8

9.2 User access management ..................................................................................................................... 9

9.3 User responsibilities ............................................................................................................................ 10

9.4 System and application access control ................................................................................................ 10

10 Cryptography .................................................................................................................................................. 11

10.1 Cryptographic controls ........................................................................................................................ 11

11 Physical and environmental security .............................................................................................................. 12

11.1 Secure areas ......................................................................................................................................... 12

11.2 Equipment ........................................................................................................................................... 12

12 Operations security ......................................................................................................................................... 13

12.1 Operational procedures and responsibilities ........................................................................................ 13

12.2 Protection from malware ..................................................................................................................... 14

12.3 Backup ................................................................................................................................................ 14

12.4 Logging and monitoring ...................................................................................................................... 15

12.5 Control of operational software ........................................................................................................... 16

12.6 Technical vulnerability management .................................................................................................. 16

12.7 Information systems audit considerations ........................................................................................... 17

13 Communications security ............................................................................................................................... 17

13.1 Network security management ............................................................................................................ 17

13.2 Information transfer............................................................................................................................. 17

14 System acquisition, development and maintenance ....................................................................................... 18

14.1 Security requirements of information systems .................................................................................... 18

14.2 Security in development and support processes .................................................................................. 18

Rec. ITU-T X.1631 (07/2015) iii
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Page

14.3 Test data .............................................................................................................................................. 19

15 Supplier relationships ..................................................................................................................................... 19

15.1 Information security in supplier relationships ..................................................................................... 19

15.2 Supplier service delivery management ................................................................................................ 20

16 Information security incident management .................................................................................................... 20

16.1 Management of information security incidents and improvements..................................................... 20

17 Information security aspects of business continuity management .................................................................. 22

17.1 Information security continuity ........................................................................................................... 22

17.2 Redundancies ...................................................................................................................................... 22

18 Compliance ..................................................................................................................................................... 22

18.1 Compliance with legal and contractual requirements .......................................................................... 22

18.2 Information security reviews ............................................................................................................... 23

Annex A – Cloud service extended control set .......................................................................................................... 25

Annex B – References on information security risk related to cloud computing ...................................................... 29

Bibliography .............................................................................................................................................................. 30

iv Rec. ITU-T X.1631 (07/2015)
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Introduction

The guidelines contained within this Recommendation | International Standard are in addition to and complement the

guidelines given in ISO/IEC 27002.

Specifically, this Recommendation | International Standard provides guidelines supporting the implementation of

information security controls for cloud service customers and cloud service providers. Some guidelines are for cloud

service customers who implement the controls, and others are for cloud service providers to support the implementation

of those controls. The selection of appropriate information security controls and the application of the implementation

guidance provided, will depend on a risk assessment and any legal, contractual, regulatory or other cloud-sector specific

information security requirements.
Rec. ITU-T X.1631 (07/2015) v
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ISO/IEC 27017:2015 (E)
INTERNATIONAL STANDARD
ITU-T RECOMMENDATION

Information technology – Security techniques – Code of practice for information security

controls based on ISO/IEC 27002 for cloud services
1 Scope

This Recommendation | International Standard gives guidelines for information security controls applicable to the

provision and use of cloud services by providing:

– additional implementation guidance for relevant controls specified in ISO/IEC 27002;

– additional controls with implementation guidance that specifically relate to cloud services.

This Recommendation | International Standard provides controls and implementation guidance for both cloud service

providers and cloud service customers.
2 Normative references

The following Recommendations and International Standards contain provisions which, through reference in this text,

constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated

were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this

Recommendation | International Standard are encouraged to investigate the possibility of applying the most recent edition

of the Recommendations and Standards listed below. Members of IEC and ISO maintain registers of currently valid

International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently valid

ITU-T Recommendations.
2.1 Identical Recommendations | International Standards

– Recommendation ITU-T Y.3500 (in force) | ISO/IEC 17788: (in force), Information technology – Cloud

computing – Overview and vocabulary.

– Recommendation ITU-T Y.3502 (in force) | ISO/IEC 17789: (in force), Information technology – Cloud

computing – Reference architecture.
2.2 Additional References

– ISO/IEC 27000: (in force), Information technology – Security techniques – Information security

management systems – Overview and vocabulary.

– ISO/IEC 27002:2013, Information technology – Security techniques – Code of practice for information

security controls.
3 Definitions and abbreviations
3.1 Terms defined elsewhere

For the purposes of this Recommendation | International Standard, the terms and definitions given in ISO/IEC 27000,

Rec. ITU-T Y.3500 | ISO/IEC 17788, Rec. ITU-T Y.3502 | ISO/IEC 17789 and the following definitions apply:

3.1.1 The following term is defined in ISO 19440:
– capability: Quality of being able to perform a given activity.
3.1.2 The following terms are defined in ISO/IEC 27040:

– data breach: Compromise of security that leads to the accidental or unlawful destruction, loss, alteration,

unauthorized disclosure of, or access to protected data transmitted, stored, or otherwise processed.

– secure multi-tenancy: Type of multi-tenancy that employs security controls to explicitly guard against

data breaches and provides validation of these controls for proper governance.

NOTE 1 – Secure multi-tenancy exists when the risk profile of an individual tenant is no greater than it would be in a

dedicated, single-tenant environment.

NOTE 2 – In very secure environments, even the identity of the tenants is kept secret.

Rec. ITU-T X.1631 (07/2015) 1
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ISO/IEC 27017:2015 (E)
3.1.3 The following term is defined in ISO/IEC 17203:

– virtual machine: The complete environment that supports the execution of guest software.

NOTE – A virtual machine is a full encapsulation of the virtual hardware, virtual disks, and the metadata associated

with it. Virtual machines allow multiplexing of the underlying physical machine through a software layer called a

hypervisor.
3.2 Abbreviations

For the purposes of this Recommendation | International Standard, the following abbreviations apply:

IaaS Infrastructure as a Service
PaaS Platform as a Service
PII Personally Identifiable Information
SaaS Software as a Service
SLA Service Level Agreement
VM Virtual Machine
4 Cloud sector-specific concepts
4.1 Overview

The use of cloud computing has changed how organizations should assess and mitigate information security risks because

of the significant changes in how computing resources are technically designed, operated and governed. This

Recommendation | International Standard provides additional cloud-specific implementation guidance based on

ISO/IEC 27002 and provides additional controls to address cloud-specific information security threats and risks

considerations.

Users of this Recommendation | International Standard should refer to clauses 5 to 18 in ISO/IEC 27002 for controls,

implementation guidance and other information. Because of the general applicability of ISO/IEC 27002, many of the

controls, implementation guidance and other information apply to both the general and cloud computing contexts of an

organization. For example, "6.1.2 Segregation of duties" of ISO/IEC 27002 provides a control that can be applied whether

the organization is acting as a cloud service provider or not. Additionally, a cloud service customer can derive

requirements for segregation of duties in the cloud environment from the same control, e.g., segregating the cloud service

customers' cloud service administrators and cloud service users.

As an extension to ISO/IEC 27002, this Recommendation | International Standard further provides cloud service specific

controls, implementation guidance and other information (see clause 4.5) that are intended to mitigate the risks that

accompany the technical and operational features of cloud services (see Annex B). The cloud service customers and the

cloud service providers can refer to ISO/IEC 27002 and this Recommendation | International Standard to select controls

with the implementation guidance, and add other controls if necessary. This process can be done by performing an

information security risk assessment and risk treatment in the organizational and business context where cloud services

are used or provided (see clause 4.4).
4.2 Supplier relationships in cloud services

ISO/IEC 27002 clause 15 "Supplier relationships" provides controls, implementation guidance and other information for

managing information security in supplier relationships. The provision and use of cloud services is a kind of supplier

relationship, where the cloud service customer is an acquirer, and the cloud service provider is a supplier. Therefore, the

clause applies to cloud service customers and cloud service providers.

Cloud service customers and cloud service providers can also form a supply chain. Suppose that a cloud service provider

provides an infrastructure capabilities type service. In addition, another cloud service provider can provide an application

capabilities type service. In this case, the second cloud service provider is a cloud service customer with respect to the

first, and a cloud service provider with respect to the cloud service customer using its service. This example illustrates

the case where this Recommendation | International Standard applies to an organization both as a cloud service customer

and as a cloud service provider. Because cloud service customers and cloud service providers form a supply chain through

the design and implementation of the cloud service(s), clause "15.1.3 Information and communication technology supply

chain" of ISO/IEC 27002 applies.

The multi-part International Standard ISO/IEC 27036, "Information security for supplier relationships", provides detailed

guidance on the information security in supplier relationships to the acquirer and supplier of products and services.

2 Rec. ITU-T X.1631 (07/2015)
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ISO/IEC 27017:2015 (E)

ISO/IEC 27036 Part 4 deals directly with the security of cloud services in supplier relationships. This standard is also

applicable to cloud service customers as acquirers and cloud service providers as suppliers.

4.3 Relationships between cloud service customers and cloud service providers

In the cloud computing environment, cloud service customer data is stored, transmitted and processed by a cloud service.

Therefore, a cloud service customer's business processes can depend upon the information security of the cloud service.

Without sufficient control over the cloud service, the cloud service customer might need to take extra precautions with

its information security practices.

Before entering into a supplier relationship, the cloud service customer needs to select a cloud service, taking into account

the possible gaps between the cloud service customer's information security requirements and the information security

capabilities offered by the service. Once a cloud service is selected, the cloud service customer should manage the use of

the cloud service in such a way as to meet its information security requirements. In this relationship, the cloud service

provider should provide the information and technical support that are necessary to meet the cloud service customer's

information security requirements. When the information security controls provided by the cloud service provider are

preset and cannot be changed by the cloud service customer, the cloud service customer may need to implement additional

controls of its own to mitigate risks.
4.4 Managing information security risks in cloud services

Cloud service customers and cloud service providers should both have information security risk management processes

in place. They are advised to refer to ISO/IEC 27001 for the requirements to conduct risk management in their information

security management systems, and to refer to ISO/IEC 27005
...

NORME ISO/IEC
INTERNATIONALE 27017
Première édition
2015-12-15
Technologies de l'information —
Techniques de sécurité — Code de
bonnes pratiques pour les contrôles
de sécurité de l'information fondés
sur l'ISO/IEC 27002 pour les services
du nuage
Information technology — Security techniques — Code of practice
for information security controls based on ISO/IEC 27002 for cloud
services
Numéro de référence
ISO/IEC 27017:2015(F)
ISO/IEC 2015
---------------------- Page: 1 ----------------------
ISO/IEC 27017:2015(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO/IEC 2015

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y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut

être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.

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ii © ISO/IEC 2015 – Tous droits réservés
---------------------- Page: 2 ----------------------
ISO/IEC 27017:2015(F)
Sommaire Page

Avant-propos ............................................................................................................................................................................................................................vii

Introduction ............................................................................................................................................................................................................................viii

1 Domaine d'application ................................................................................................................................................................................... 1

2 Références normatives ................................................................................................................................................................................... 1

3 Termes, définitions et abréviations .................................................................................................................................................. 1

3.1 Termes et définitions ......................................................................................................................................................................... 1

3.2 Abréviations .............................................................................................................................................................................................. 2

4 Concepts spécifiques au secteur du nuage ................................................................................................................................ 2

4.1 Vue d’ensemble ....................................................................................................................................................................................... 2

4.2 Relations avec les fournisseurs dans les services en nuage ............................................................................. 3

4.3 Relations entre les clients de services en nuage et les fournisseurs de services en nuage .. 3

4.4 Gestion des risques relatifs à la sécurité de l'information dans les services en nuage ............ 4

4.5 Structure de la présente norme ................................................................................................................................................ 4

5 Politiques de sécurité de l’information ........................................................................................................................................ 5

5.1 Orientations de la direction en matière de sécurité de l'information ..................................................... 5

5.1.1 Politiques de sécurité de l'information ........................................................................................................ 5

5.1.2 Revue des politiques de sécurité de l'information ............................................................................. 6

6 Organization de la sécurité de l'information .......................................................................................................................... 6

6.1 Organization interne .......................................................................................................................................................................... 6

6.1.1 Fonctions et responsabilités liées à la sécurité de l'information ........................................... 6

6.1.2 Séparation des tâches .................................................................................................................................................. 7

6.1.3 Relations avec les autorités .................................................................................................................................... 7

6.1.4 Relations avec des groupes de travail spécialisés ............................................................................... 7

6.1.5 La sécurité de l'information dans la gestion de projet .................................................................... 7

6.2 Appareils mobiles et télétravail ................................................................................................................................................ 7

6.2.1 Politique en matière d'appareils mobiles ................................................................................................... 7

6.2.2 Télétravail .............................................................................................................................................................................. 8

7 Sécurité des ressources humaines ..................................................................................................................................................... 8

7.1 Avant l'embauche .................................................................................................................................................................................. 8

7.1.1 Sélection des candidats .............................................................................................................................................. 8

7.1.2 Termes et conditions d'embauche .................................................................................................................... 8

7.2 Pendant la durée du contrat ........................................................................................................................................................ 8

7.2.1 Responsabilités de la direction............................................................................................................................ 8

7.2.2 Sensibilisation, apprentissage et formation à la sécurité de l'information ................... 8

7.2.3 Processus disciplinaire ............................................................................................................................................... 9

7.3 Rupture, terme ou modification du contrat de travail .......................................................................................... 9

7.3.1 Achèvement ou modification des responsabilités associées au contrat de travail . 9

8 Gestion des actifs.................................................................................................................................................................................................. 9

8.1 Responsabilités relatives aux actifs ...................................................................................................................................... 9

8.1.1 Inventaire des actifs ...................................................................................................................................................... 9

8.1.2 Propriété des actifs .....................................................................................................................................................10

8.1.3 Utilization correcte des actifs ............................................................................................................................10

8.1.4 Restitution des actifs .................................................................................................................................................10

8.2 Classification de l'information ................................................................................................................................................10

8.2.1 Classification de l'information ..........................................................................................................................10

8.2.2 Marquage des informations ................................................................................................................................10

8.2.3 Manipulation des actifs ...........................................................................................................................................11

8.3 Manipulation des supports ......... ...............................................................................................................................................11

8.3.1 Gestion des supports amovibles ......................................................................................................................11

8.3.2 Mise au rebut des supports .................................................................................................................................11

8.3.3 Transfert physique des supports ....................................................................................................................11

© ISO/IEC 2015 – Tous droits réservés iii
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ISO/IEC 27017:2015(F)

9 Contrôle d’accès ..................................................................................................................................................................................................11

9.1 Exigences métier en matière de contrôle d'accès ..................................................................................................11

9.1.1 Politique de contrôle d'accès ..............................................................................................................................11

9.1.2 Accès aux réseaux et aux services en réseau ........................................................................................11

9.2 Gestion de l’accès utilizateur ...................................................................................................................................................12

9.2.1 Enregistrement et désinscription des utilizateurs ..........................................................................12

9.2.2 Maîtrise de la gestion des accès utilizateur ...........................................................................................12

9.2.3 Gestion des privilèges d'accès ...........................................................................................................................12

9.2.4 Gestion des informations secrètes d'authentification des utilizateurs .........................13

9.2.5 Revue des droits d'accès utilizateur .............................................................................................................13

9.2.6 Suppression ou adaptation des droits d'accès ....................................................................................13

9.3 Responsabilités des utilizateurs ...........................................................................................................................................13

9.3.1 Utilization d'informations secrètes d'authentification ................................................................13

9.4 Contrôle de l'accès au système et aux applications ..............................................................................................13

9.4.1 Restriction d'accès à l'information ................................................................................................................14

9.4.2 Sécuriser les procédures de connexion .....................................................................................................14

9.4.3 Système de gestion des mots de passe.......................................................................................................14

9.4.4 Utilization de programmes utilitaires à privilèges ..........................................................................14

9.4.5 Contrôle d'accès au code source des programmes ..........................................................................14

10 Cryptographie .......................................................................................................................................................................................................15

10.1 Mesures cryptographiques ........................................................................................................................................................15

10.1.1 Politique d'utilization des mesures cryptographiques ................................................................15

10.1.2 Gestion des clés ..............................................................................................................................................................15

11 Sécurité physique et environnementale ...................................................................................................................................16

11.1 Zones sécurisées .................................................................................................................................................................................16

11.1.1 Périmètre de sécurité physique .......................................................................................................................16

11.1.2 Contrôles physiques des accès ..........................................................................................................................16

11.1.3 Sécurisation des bureaux, des salles et des équipements .........................................................16

11.1.4 Protection contre les menaces extérieures et environnementales ...................................16

11.1.5 Travail dans les zones sécurisées ...................................................................................................................17

11.1.6 Zones de livraison et de chargement ...........................................................................................................17

11.2 Matériels ....................................................................................................................................................................................................17

11.2.1 Emplacement et protection du matériel...................................................................................................17

11.2.2 Services généraux ........................................................................................................................................................17

11.2.3 Sécurité du câblage .....................................................................................................................................................17

11.2.4 Maintenance du matériel .......................................................................................................................................17

11.2.5 Sortie des actifs ..............................................................................................................................................................17

11.2.6 Sécurité du matériel et des actifs hors des locaux ...........................................................................17

11.2.7 Mise au rebut ou recyclage sécurisé(e) du matériel ......................................................................17

11.2.8 Matériel utilizateur laissé sans surveillance .........................................................................................18

11.2.9 Politique du bureau propre et de l'écran vide .....................................................................................18

12 Sécurité liée à l'exploitation ..................................................................................................................................................................18

12.1 Procédures et responsabilités liées à l'exploitation ............................................................................................18

12.1.1 Procédures d'exploitation documentées .................................................................................................18

12.1.2 Gestion des changements ......................................................................................................................................18

12.1.3 Dimensionnement .......................................................................................................................................................19

12.1.4 Séparation des environnements de développement, de test et d'exploitation .......19

12.2 Protection contre les logiciels malveillants .................................................................................................................19

12.2.1 Mesures contre les logiciels malveillants ................................................................................................19

12.3 Sauvegarde ..............................................................................................................................................................................................19

12.3.1 Sauvegarde des informations .............................................................................................................................20

12.4 Journalisation et surveillance .................................................................................................................................................20

12.4.1 Journalisation des événements ........................................................................................................................20

12.4.2 Protection de l'information journalisée ....................................................................................................21

12.4.3 Journaux administrateur et opérateur .......................................................................................................21

12.4.4 Synchronisation des horloges ...........................................................................................................................21

12.5 Maîtrise des logiciels en exploitation ...............................................................................................................................22

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12.5.1 Installation de logiciels sur des systèmes en exploitation ........................................................22

12.6 Gestion des vulnérabilités techniques .............................................................................................................................22

12.6.1 Gestion des vulnérabilités techniques .......................................................................................................22

12.6.2 Restrictions liées à l'installation de logiciels ........................................................................................22

12.7 Considérations sur l'audit des systèmes d'information ...................................................................................22

12.7.1 Mesures relatives à l'audit des systèmes d'information .............................................................23

13 Sécurité des communications ..............................................................................................................................................................23

13.1 Management de la sécurité des réseaux ........................................................................................................................23

13.1.1 Contrôle des réseaux .................................................................................................................................................23

13.1.2 Sécurité des services de réseau........................................................................................................................23

13.1.3 Séparation des réseaux ...........................................................................................................................................23

13.2 Transfert de l'information ..........................................................................................................................................................23

13.2.1 Politiques et procédures de transfert de l'information ...............................................................23

13.2.2 Accords en matière de transfert d'information ..................................................................................24

13.2.3 Messagerie électronique ........................................................................................................................................24

13.2.4 Engagements de confidentialité ou de non-divulgation .............................................................24

14 Acquisition, développement et maintenance des systèmes d'information ..........................................24

14.1 Exigences de sécurité applicables aux systèmes d'information ................................................................24

14.1.1 Analyse et spécification des exigences de sécurité de l'information ...............................24

14.1.2 Sécurisation des services d'application sur les réseaux publics .........................................24

14.1.3 Protection des transactions liées aux services d'application .................................................24

14.2 Sécurité des processus de développement et d'assistance technique .................................................25

14.2.1 Politique de développement sécurisé .........................................................................................................25

14.2.2 Procédures de contrôle des changements apportés au système .........................................25

14.2.3 Revue technique des applications après changement apporté à la

plateforme d'exploitation ......................................................................................................................................25

14.2.4 Restrictions relatives aux changements apportés aux progiciels .......................................25

14.2.5 Principes d’ingénierie de la sécurité des systèmes .........................................................................25

14.2.6 Environnement de développement sécurisé ........................................................................................25

14.2.7 Développement externalisé .................................................................................................................................25

14.2.8 Phase de test de la sécurité du système ....................................................................................................26

14.2.9 Test de conformité du système .........................................................................................................................26

14.3 Données de test ...................................................................................................................................................................................26

14.3.1 Protection des données de test ........................................................................................................................26

15 Relations avec les fournisseurs ..........................................................................................................................................................26

15.1 Sécurité de l'information dans les relations avec les fournisseurs .........................................................26

15.1.1 Politique de sécurité de l'information dans les relations avec les fournisseurs ....26

15.1.2 La sécurité dans les accords conclus avec les fournisseurs .....................................................26

15.1.3 Chaîne d'approvisionnement informatique ..........................................................................................27

15.2 Gestion de la prestation de services des fournisseurs .......................................................................................27

15.2.1 Surveillance et revue des services des fournisseurs ......................................................................27

15.2.2 Gestion des changements apportés dans les services des fournisseurs .......................28

16 Gestion des incidents liés à la sécurité de l'information .........................................................................................28

16.1 Gestion des incidents liés à la sécurité de l'information et améliorations .......................................28

16.1.1 Responsabilités et procédures ..........................................................................................................................28

16.1.2 Signallement des événements liés à la sécurité de l'information .......................................28

16.1.3 Signallement des failles liées à la sécurité de l'information ....................................................29

16.1.4 Appréciation des événements liés à la sécurité de l'information et prise de

décision .................................................................................................................................................................................29

16.1.5 Réponse aux incidents liés à la sécurité de l'information .........................................................29

16.1.6 Tirer des enseignements des incidents liés à la sécurité de l'information .................29

16.1.7 Recueil de preuves .......................................................................................................................................................29

17 Aspects de la sécurité de l'information dans la gestion de la continuité de l'activité ...............30

17.1 Continuité de la sécurité de l'information ....................................................................................................................30

17.1.1 Organization de la continuité de la sécurité de l'information ...............................................30

17.1.2 Mise en œuvre de la continuité de la sécurité de l'information ...........................................30

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17.1.3 Vérifier, revoir et évaluer la continuité de la sécurité de l'information .........................30

17.2 Redondances ..........................................................................................................................................................................................30

17.2.1 Disponibilité des moyens de traitement de l'information ........................................................30

18 Conformité ...............................................................................................................................................................................................................30

18.1 Conformité aux obligations légales et contractuelles .........................................................................................30

18.1.1 Identification de la législation et des exigences contractuelles applicables .............30

18.1.2 Droits de propriété intellectuelle ...................................................................................................................31

18.1.3 Protection des enregistrements ......................................................................................................................31

18.1.4 Protection de la vie privée et protection des données à caractère personnel .........32

18.1.5 Réglementation relative aux mesures cryptographiques ..........................................................32

18.2 Revue de la sécurité de l'information ...............................................................................................................................32

18.2.1 Revue indépendante de la sécurité de l'information .....................................................................32

18.2.2 Conformité avec les politiques et les normes de sécurité .........................................................33

18.2.3 Examen de la conformité technique .............................................................................................................33

Annexe A (normative) Ensemble étendu de mesures pour les services en nuage .............................................34

Annexe B (informative) Références sur les risques de sécurité de l'information liés à

l'informatique en nuage ............................................................................................................................................................................39

Bibliographie ...........................................................................................................................................................................................................................41

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