ISO/IEC 24760-1:2025

International
Standard
ISO/IEC 24760-1
Third edition
Information security, cybersecurity
2025-09
and privacy protection —
A framework for identity
management —
Part 1:
Core concepts and terminology
Sécurité de l'information, cybersécurité et protection de la vie
privée — Cadre pour la gestion de l'identité —
Partie 1: Concepts fondamentaux et terminologie
Horizontal document
Reference number
© ISO/IEC 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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© ISO/IEC 2025 – All rights reserved
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General terms .1
3.2 Identification .3
3.3 Authenticating identity information .3
3.4 Management of identity .6
3.5 Federation .8
3.6 Privacy protection .8
4 Symbols and abbreviated terms. 9
5 Identity . 9
5.1 General .9
5.2 Identity information .10
5.3 Identifier .11
5.4 Credential .11
5.4.1 General .11
5.4.2 Authenticator. 12
5.4.3 Credential management . 13
6 Attributes .13
6.1 General . 13
6.2 Types of attributes . 13
6.3 Domain of origin .14
7 Managing identity information .15
7.1 General . 15
7.2 Identity lifecycle . 15
8 Identification . 17
8.1 General .17
8.2 Verification . .18
8.3 Enrolment .18
8.4 Registration .18
8.5 Identity proofing .19
8.5.1 General .19
8.5.2 Identity evidence .19
9 Authentication .20
10 Maintenance .20
11 Implementation aspects .20
12 Privacy .21
Bibliography .22
Index of terms . .24

© ISO/IEC 2025 – 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.
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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 Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee
SC 27, Information security, cybersecurity and privacy protection.
This third edition cancels and replaces the second edition (ISO/IEC 24760-1:2019), which has been
technically revised. It also incorporates the Amendment ISO/IEC 24760-1:2019/Amd 1:2023.
The main changes are as follows:
— title has been updated;
— the document has been editorially revised.
A list of all parts in the ISO/IEC 24760 series can be found on the ISO website.
This document has been given the status of a horizontal document in accordance with the ISO/IEC
Directives, Part 1.
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
Introduction
Data processing systems commonly gather a range of information on their users, be it a person, piece of
equipment, or piece of software connected to them, and make decisions based on the gathered information.
Such identity-based decisions can concern access to applications or other resources.
To address the need to efficiently and effectively implement systems that make identity-based decisions, the
ISO/IEC 24760 series specifies a framework for the issuance, administration, and use of data that serves to
characterize individuals, organizations or information technology components which operate on behalf of
individuals or organizations.
For many organizations, the proper management of identity information is crucial for maintaining security
within organizational processes. For individuals, correct identity management is important for protecting
privacy.
The ISO/IEC 24760 series specifies fundamental concepts and operational structures for identity
management and provides a framework on which information systems can meet business, contractual,
regulatory, and legal obligations.
This document specifies the terminology and concepts for identity management, in order to promote a
common unde
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