IEC TS 62443-6-1:2024

IEC TS 62443-6-1 ®
Edition 1.0 2024-03
TECHNICAL
SPECIFICATION
Security for industrial automation and control systems –
Part 6-1: Security evaluation methodology for IEC 62443-2-4

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IEC TS 62443-6-1 ®
Edition 1.0 2024-03
TECHNICAL
SPECIFICATION
Security for industrial automation and control systems –

Part 6-1: Security evaluation methodology for IEC 62443-2-4

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40  ISBN 978-2-8322-8328-8

– 2 – IEC TS 62443-6-1:2024 © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions. 6
3.2 Abbreviated terms . 8
4 Overview . 9
5 Methodology for the evaluation . 9
5.1 Scoping of the subject under evaluation (SuE) . 9
5.2 Content of conformity statements and conformance evidence . 9
5.3 Evaluation of conformity statement and conformance evidence . 10
5.4 Particular requirements for evaluations related to ML-4. 10
6 Table used for evaluation . 10
6.1 Overview . 10
6.2 Evaluation criteria . 11
6.3 Conformance evidence related to maturity level ML-1 . 11
6.4 Conformance evidence related to maturity level ML-2 . 11
6.5 Conformance evidence related to maturity level ML-3 . 11
6.6 Conformance evidence related to maturity level ML-4 . 12
6.7 Overview of evaluation criteria and examples of conformance evidence
(Table 1) . 13
Annex A (informative) Legend for maturity levels . 131
Bibliography . 132

Table 1 – Overview of evaluation criteria and examples of conformance evidence . 13

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECURITY FOR INDUSTRIAL AUTOMATION AND CONTROL SYSTEMS –

Part 6-1: Security evaluation methodology for IEC 62443-2-4

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC TS 62443-6-1 has been prepared by IEC technical committee TC 65: Industrial-process
measurement, control and automation. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
65/1030/DTS 65/1042A/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.

– 4 – IEC TS 62443-6-1:2024 © IEC 2024
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at https://www.iec.ch/members_experts/refdocs. The main document types developed by IEC
are described in greater detail at https://www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 62443 series, published under the general title Security for industrial
automation and control systems, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
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that it contains colours which are considered to be useful for the correct understanding
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INTRODUCTION
Repeatable and comparable evaluations of the security program according to IEC 62443-2-4
require a common understanding for acceptable evaluation criteria and conformance evidence.
This document supports service providers and evaluators to do a conformity assessment by
evaluating the security program against the requirements of IEC 62443-2-4.
This document specifies the evaluation methodology to support interested parties, for example
during conformity assessment activities to achieve repeatable and reproducible evaluation
results against IEC 62443-2-4 requirements.

___________
Throughout the document, when reference is being made to IEC 62443-2-4 (undated), this means
IEC 62443-2-4:2015 and IEC 62443-2-4:2015/AMD1:2017 (Ed.1). A consolidated version of IEC 62443-2-4 is
available.
– 6 – IEC TS 62443-6-1:2024 © IEC 2024
SECURITY FOR INDUSTRIAL AUTOMATION AND CONTROL SYSTEMS –

Part 6-1: Security evaluation methodology for IEC 62443-2-4

1 Scope
This part of IEC 62443 specifies the evaluation methodology to support interested parties (e.g.
during conformity assessment activities) to achieve repeatable and reproducible evaluation
results against IEC 62443-2-4 requirements. This document is intended for first-party, second-
party or third-party conformity assessment activity, for example by product suppliers, service
providers, asset owners and conformity assessment bodies.
NOTE 1 62443-2-4 specifies requirements for security capabilities of an IACS service provider. These security
capabilities can be offered as a security program during integration and maintenance of an automation solution.
NOTE 2 The term “conformity assessment” and the terms first-party conformity assessment activity, second-party
conformity assessment activity and third-party conformity assessment activity are defined in ISO/IEC 17000.
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.
IEC 62443-2-4:2015, Security for industrial automation and control systems – Part 2-4: Security
program requirements for IACS service providers
IEC 62443-2-4:2015/AMD1:2017
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
IEC and ISO maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/
3.1.1
acceptable evaluation criteria
criteria which may be used for an evaluation
Note
...