ISO/IEC TS 27103

FINAL DRAFT
Technical
Specification
ISO/IEC DTS 27103
ISO/IEC JTC 1/SC 27
Cybersecurity — Guidance on
Secretariat: DIN
using ISO and IEC standards in a
Voting begins on:
Cybersecurity Framework
2025-05-26
Voting terminates on:
2025-07-21
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MADE IN NATIONAL REGULATIONS.
Reference number
ISO/IEC DTS 27103:2025(en) © ISO/IEC 2025

FINAL DRAFT
ISO/IEC DTS 27103:2025(en)
Technical
Specification
ISO/IEC DTS 27103
ISO/IEC JTC 1/SC 27
Cybersecurity — Guidance on
Secretariat: DIN
using ISO and IEC standards in a
Voting begins on:
Cybersecurity Framework
Voting terminates on:
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO/IEC 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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Published in Switzerland Reference number
ISO/IEC DTS 27103:2025(en) © ISO/IEC 2025

© ISO/IEC 2025 – All rights reserved
ii
ISO/IEC DTS 27103:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Document structure . 1
5 Background . 1
5.1 General .1
5.2 Advantages of a risk-based approach to cybersecurity .2
5.3 Stakeholders .2
5.4 Activities of a cybersecurity framework and programme .2
6 Concepts . 2
6.1 Overview of cybersecurity frameworks .2
6.2 Cybersecurity framework functions . .3
6.2.1 General .3
6.2.2 Identify .4
6.2.3 Protect .5
6.2.4 Detect .6
6.2.5 Respond .6
6.2.6 Recover.7
Annex A (informative) Subcategories . 8
Annex B (informative) Three principles of cybersecurity for top management .16
Bibliography . 19

© ISO/IEC 2025 – All rights reserved
iii
ISO/IEC DTS 27103:2025(en)
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.
This first edition of ISO/IEC TS 27103 cancels and replaces ISO/IEC TR 27103:2018, which has been
technically revised.
The main changes are as follows:
— updated to align with ISO/IEC 27002:2022.
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 2025 – All rights reserved
iv
ISO/IEC DTS 27103:2025(en)
Introduction
Security on the Internet and other networks is a subject of growing concern. Organizations around the
world, in both government and industry sectors, are seeking ways to address and manage cybersecurity
risks, including via baseline cybersecurity measures that may be implemented as requirements or guidance.
The demonstrated security and economic value of utilizing existing best practices to develop approaches to
cyber risk management has led organizations to assess how to use and improve upon existing approaches.
Perspectives, and consequent approaches, to risk management are affected by the terminology used, e.g.
“cybersecurity” versus “information security”. Where similar risks are addressed, this different perspective
can result in “cybersecurity” approaches focusing on external threats and the need to use information for
organizational purposes, while, in contrast,” information security” approaches consider all risks whether
from internal or external sources. There can also be a perception that cybersecurity risks are primarily
related to antagonistic threats, and that a lack of “cybersecurity” can create worse consequences to the
organization than a lack of “information security”. Thus, cybersecurity can be perceived as more relevant
to the organization than information security. This perception can cause confusion and also reduces the
effectiveness of risk assessment and treatment.
Regardless of perception, the concepts behind information security can be used to assess and manage
cybersecurity risks. The key question is how to manage cybersecurity risk in a comprehensive and
structured manner, and ensure that processes, governance and controls are addressed. This can be done
through a management systems approach. An Information Security Management system (ISMS) as
described in ISO/IEC 27001 is a well proven way for any organization to implement a risk-based approach to
cybersecurity.
This document demonstrates how a cybersecurity framework can utilize current information security
standards to achieve a well-controlled approach to cybersecurity management.

© ISO/IEC 2025 – All rights reserved
v
FINAL DRAFT Technical Specification ISO/IEC DTS 27103:2025(en)
Cybersecurity — Guidance on using ISO and IEC standards in
a Cybersecurity Framework
1 Scope
This document provides guidance on how to leverage existing ISO and IEC standards in a cybersecurity
framework.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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/
3.1
information security
preservation of confidentiality, integrity and availability of information
[SOURCE: ISO/IEC 27000:2018, 2.33, modified — note 1 to entry has been removed.]
4 Document structure
This document provides background on why having a risk-based, prioritized, flexible, outcome-focused, and
communications-enabling framework for cybersecurity is important. It then describes the objectives of a
strong cybersecurity framework and includes mapping to existing standards that can be used to achieve
these objectives.
5 Background
5.1 General
ISO, IEC, and ISO/IEC standards can be applied to help solve the challenges of cybersecurity. Existing and
emerging cybersecurity frameworks throughout the world reference ISO, IEC, and ISO/IEC standards as
useful sources of information.
Implementing cybersecurity framework, or a cybersecurity programme, requires a consistent and iterative
approach to identifying, assessing, and managing risk and evaluating implementation of the framework.
ISO/IEC 27001 already provides a risk management framework that can be applied to prioritize and
implement cybersecurity activities within an organization.

© ISO/IEC 2025 – All rights reserved
ISO/IEC DTS 27103:2025(en)
5.2 Advantages of a risk-based approach to cybersecurity
A risk-based approach to cybersecurity:
— enables organizations to measure the impact of cybersecurity investments and improve their
cybersecurity risk management over time;
— is prioritized, flexible and outcome-focused;
— enables organizations to make security investment decisions that address risk, implement risk
mitigations in a way tha
...