ISO/IEC 27035-4:2024
(Main)Information technology — Information security incident management — Part 4: Coordination
Information technology — Information security incident management — Part 4: Coordination
This document provides guidelines for multiple organizations handling information security incidents in a coordinated manner. It also addresses the impacts of external cooperation on the internal incident management of an individual organization and provides guidelines for an individual organization to adapt to the coordination process. Furthermore, it provides guidelines for the coordination team, if it exists, to perform coordination activities supporting the cross-organization incident response. The principles given in this document are generic and are intended to be applicable to multiple organizations to work together to handle information security incidents, regardless of their types, sizes or nature. Organizations can adjust the guidance given in this document according to their type, sizes and nature of business in relation to the information security risk situation. This document is also applicable to an individual organization that participates in partner relationships.
Technologies de l'information — Gestion des incidents de sécurité de l'information — Partie 4: Coordination
General Information
Standards Content (Sample)
International
Standard
ISO/IEC 27035-4
First edition
Information technology —
2024-12
Information security incident
management —
Part 4:
Coordination
Technologies de l'information — Gestion des incidents de sécurité
de l'information —
Partie 4: Coordination
Reference number
© ISO/IEC 2024
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© ISO/IEC 2024 – All rights reserved
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Overview . 2
4.1 General .2
4.2 Coordination team .3
4.3 Principles of coordination .4
4.3.1 Timeliness principle .4
4.3.2 Roles and responsibilities principle .4
4.3.3 Common understanding principle .4
4.3.4 Confidentiality principle .4
5 Coordinated incident management process . 4
5.1 Overview .4
5.2 Coordinated plan and prepare .5
5.3 Coordinated detect and report .6
5.4 Coordinated assessment and decision .7
5.5 Coordinated respond .8
5.6 Coordinated learn lessons .9
6 Guidelines for key activities of coordinated incident management .10
6.1 Developing coordination policies . .10
6.2 Establishing communications .11
6.3 Threat and event Information sharing .11
6.3.1 Overview .11
6.3.2 Information types . 12
6.3.3 Establishing information sharing relationships . 13
6.3.4 Participating information sharing relationships .14
6.4 Conducting coordinated exercises .16
6.5 Building trust .17
Annex A (informative) Examples of information security incident management coordination . 19
Bibliography .22
© ISO/IEC 2024 – All rights reserved
iii
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.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of document should be noted. This document was drafted in accordance with the editorial rules of the ISO/
IEC Directives, Part 2 (see www.iso.org/directives or www.iec.ch/members_experts/refdocs).
ISO and IEC draw attention to the possibility that the implementation of this document may involve the
use of (a) patent(s). ISO and IEC take no position concerning the evidence, validity or applicability of any
claimed patent rights in respect thereof. As of the date of publication of this document, ISO and IEC had not
received notice of (a) patent(s) which may be required to implement this document. However, implementers
are cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents and https://patents.iec.ch. ISO and IEC shall not be held
responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www.iso.org/iso/foreword.html.
In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 27, Information security, cybersecurity and privacy protection.
A list of all parts in the ISO/IEC 27035 series can be found on the ISO and IEC websites.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national-committees.
© ISO/IEC 2024 – All rights reserved
iv
Introduction
Coordination is an important aspect in information security incident management. Incidents crossing
organizational boundaries can occur and cannot be easily resolved by a single organization. Emerging
threats are becoming increasingly sophisticated and can have a much larger impact than previously. The
characteristics of emerging threats and attacks make it more urgent than ever to coordinate incidents
across organizations.
Coordination can include relevant parties both within and outside the organization. For example, relevant
parties within the organization include business managers and representatives from IT; external interested
parties include incident response teams of external organizations and law enforcement organizations. See
ISO/IEC 27035-2:2023, Clause 8 for a complete list. This document, however, only considers coordination
between multiple organizations. This document provides guidelines for multiple organizations to work
together to handle information security incidents. The coordination activities occur throughout the
information security incident management process as defined in ISO/IEC 27035-1.
This document addresses the coordination of information security incident management between multiple
organizations. Incidents sometimes involve technical vulnerabilities. Guidance on the coordination,
disclosure, and handling of technical vulnerabilities is provided by ISO/IEC 29147 and ISO/IEC 30111.
Additional information on the coordination of technical vulnerabilities between multiple organizations is
provided by ISO/IEC TR 5895.
© ISO/IEC 2024 – All rights reserved
v
International Standard ISO/IEC 27035-4:2024(en)
Information technology — Information security incident
management —
Part 4:
Coordination
1 Scope
This document provides guidelines for multiple organizations handling information security incidents
in a coordinated manner. It also addresses the impacts of external cooperation on the internal incident
management of an individual organization and provides guidelines for an individual organization to adapt
to the coordination process. Furthermore, it provides guidelines for the coordination team, if it exists, to
perform coordination activities supporting the cross-organization incident response.
The principles given in this document are generic and are intended to be applicable to multiple organizations
to work together to handle information security incidents, regardless of their types, sizes or nature.
Organizations can adjust the guidance given in this document according to their type, sizes and nature
of business in relation to the information security risk situation. This document is also applicable to an
individual organization that participates in partner relationships.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 27000, Information technology — Security techniques — Information security management systems —
Overview and vocabulary
ISO/IEC 27035-1, Information technology — Information security incident management — Part 1: Principles
and process
ISO/IEC 27035-2, Information technology — Information security incident management — Part 2: Guidelines to
plan and prepare for incident response
ISO/IEC 27035-3, Information technology — Information security incident management — Part 3: Guidelines
for ICT incident response operations
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 27000, ISO/IEC 27035-1,
ISO/IEC 27035-2, ISO/IEC 27035-3 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
© ISO/IEC 2024 – All rights reserved
3.1
incident response team
IRT
team of appropriately skilled and trusted members of an organization that responds to and resolves
incidents in a coordinated way
Note 1 to entry: There can be several IRTs, one for each aspect of t
...
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