ISO/IEC 27035-2:2016

INTERNATIONAL ISO/IEC
STANDARD 27035-2
First edition
2016-11-01
Information technology — Security
techniques — Information security
incident management —
Part 2:
Guidelines to plan and prepare for
incident response
Technologies de l’information — Techniques de sécurité — Gestion
des incidents de sécurité de l’information —
Partie 2: Lignes directrices pour planifier et préparer une réponse aux
incidents
Reference number
©
ISO/IEC 2016
© ISO/IEC 2016, Published in Switzerland
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ii © ISO/IEC 2016 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 Terms and definitions . 2
3.2 Abbreviated terms . 2
4 Information security incident management policy . 3
4.1 General . 3
4.2 Involved parties . 3
4.3 Information security incident management policy content . 4
5 Updating of information security policies . 6
5.1 General . 6
5.2 Linking of policy documents . 6
6 Creating information security incident management plan . 6
6.1 General . 6
6.2 Information security incident management plan built on consensus. 7
6.3 Involved parties . 8
6.4 Information security incident management plan content . 8
6.5 Incident classification scale .12
6.6 Incident forms .12
6.7 Processes and procedures .12
6.8 Trust and confidence .13
6.9 Handling confidential or sensitive information .14
7 Establishing an incident response team (IRT) .14
7.1 General .14
7.2 IRT types and roles .14
7.3 IRT staff .16
8 Establishing relationships with other organizations .19
8.1 General .19
8.2 Relationship with other parts of the organization .19
8.3 Relationship with external interested parties .20
9 Defining technical and other support.20
9.1 General .20
9.2 Examples of technical support .22
9.3 Examples of other support .22
10 Creating information security incident awareness and training .22
11 Testing the information security incident management plan.24
11.1 General .24
11.2 Exercise .24
11.2.1 Defining the goal of the exercise .24
11.2.2 Defining the scope of an exercise .25
11.2.3 Conducting an exercise .25
11.3 Incident response capability monitoring .26
11.3.1 Implementing an incident response capability monitoring program .26
11.3.2 Metrics and governance of incident response capability monitoring .26
12 Lessons learned .27
12.1 General .27
12.2 Identifying the lessons learned.27
© ISO/IEC 2016 – All rights reserved iii

12.3 Identifying and making improvements to information security control implementation .28
12.4 Identifying and making improvements to information security risk assessment
and management review results .28
12.5 Identifying and making improvements to the information security incident
management plan .28
12.6 IRT evaluation .29
12.7 Other improvements .30
Annex A (informative) Legal and regulatory aspects .31
Annex B (informative) Example information security event, incident and vulnerability
reports and forms .34
Annex C (informative) Example approaches to the categorization and classification of
information security events and incidents .46
Bibliography .57
iv © ISO/IEC 2016 – All rights reserved

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.
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).
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. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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 the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/IEC JTC 1, Information technology, SC 27, IT Security
techniques.
This first edition of ISO/IEC 27035-2, together with ISO/IEC 27035-1, cancels and replaces
ISO/IEC 27035:2011, which has been technically revised.
ISO/IEC 27035 consists of the following parts, under the general title Information technology — Security
techniques — Information security incident management:
— Part 1: Principles of incident management
— Part 2: Guidelines to plan and prepare for incident
...