SIST EN IEC 62443-4-1:2018

SLOVENSKI STANDARD
SIST EN 62443-4-1:2018
01-junij-2018
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Security for industrial automation and control systems - Part 4-1: Secure product
development lifecycle requirements (IEC 62443-4-1:2018)
IT-Sicherheit für industrielle Automatisierungssysteme - Teil 4-1: Anforderungen an den
Lebenszyklus für eine sichere Produktentwicklung (IEC 62443-4-1:2018)
Security for industrial automation and control systems - Part 4-1: Secure product
development lifecycle requirements (IEC 62443-4-1:2018)
Ta slovenski standard je istoveten z: EN IEC 62443-4-1:2018
ICS:
13.020.60 Življenjski ciklusi izdelkov Product life-cycles
25.040.01 Sistemi za avtomatizacijo v Industrial automation
industriji na splošno systems in general
SIST EN 62443-4-1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 62443-4-1:2018
SIST EN 62443-4-1:2018
EUROPEAN STANDARD EN IEC 62443-4-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 25.040.40; 35.030
English Version
Security for industrial automation and control systems - Part 4-1:
Secure product development lifecycle requirements
(IEC 62443-4-1:2018)
To be completed IT-Sicherheit für industrielle Automatisierungssysteme - Teil
(IEC 62443-4-1:2018) 4-1: Anforderungen an den Lebenszyklus für eine sichere
Produktentwicklung
(IEC 62443-4-1:2018)
This European Standard was approved by CENELEC on 2018-02-19. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62443-4-1:2018 E

SIST EN 62443-4-1:2018
European foreword
The text of document 65/685/FDIS, future edition 1 of IEC 62443-4-1, prepared by IEC/TC 65
"Industrial-process measurement, control and automation" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 62443-4-1:2018.

The following dates are fixed:
• latest date by which the document has to be (dop) 2018-11-19
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2021-02-19
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 62443-4-1:2018 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 62740 NOTE Harmonized as EN 62470.
IEC 61508 (series) NOTE Harmonized as EN 61508 (series).
ISO/IEC 27001 NOTE Harmonized as EN ISO/IEC 27001.
ISO/IEC 27002 NOTE Harmonized as EN ISO/IEC 27002.
ISO 9001 NOTE Harmonized as EN ISO 9001.

SIST EN 62443-4-1:2018
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62443-2-4 2015 Security for industrial process - -
measurement and control - Network and
system security - Part 2-4: Certification of
IACS supplier security policies and
practices
+ A1 2017  - -
SIST EN 62443-4-1:2018
SIST EN 62443-4-1:2018
IEC 62443-4-1 ®
Edition 1.0 2018-01
INTERNATIONAL
STANDARD
colour
inside
Security for industrial automation and control systems –

Part 4-1: Secure product development lifecycle requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ISBN 978-2-8322-5239-0
ICS 25.040.40; 35.030
SIST EN 62443-4-1:2018
– 2 – IEC 62443-4-1:2018 © IEC 2018
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 11
2 Normative references . 11
3 Terms, definitions, abbreviated terms, acronyms and conventions . 11
3.1 Terms and definitions . 11
3.2 Abbreviated terms and acronyms . 16
3.3 Conventions . 17
4 General principles . 17
4.1 Concepts . 17
4.2 Maturity model . 19
5 Practice 1 – Security management . 20
5.1 Purpose . 20
5.2 SM-1: Development process . 21
5.2.1 Requirement . 21
5.3 Rationale and supplemental guidance . 21
5.4 SM-2: Identification of responsibilities . 21
5.4.1 Requirement . 21
5.4.2 Rationale and supplemental guidance. 21
5.5 SM-3: Identification of applicability . 21
5.5.1 Requirement . 21
5.5.2 Rationale and supplemental guidance. 22
5.6 SM-4: Security expertise . 22
5.6.1 Requirement . 22
5.6.2 Rationale and supplemental guidance. 22
5.7 SM-5: Process scoping . 22
5.7.1 Requirement . 22
5.7.2 Rationale and supplemental guidance. 23
5.8 SM-6: File integrity . 23
5.8.1 Requirement . 23
5.8.2 Rationale and supplemental guidance. 23
5.9 SM-7: Development environment security . 23
5.9.1 Requirement . 23
5.9.2 Rationale and supplemental guidance. 23
5.10 SM-8: Controls for private keys . 23
5.10.1 Requirement . 23
5.10.2 Rationale and supplemental guidance. 24
5.11 SM-9: Security requirements for externally provided components . 24
5.11.1 Requirement . 24
5.11.2 Rationale and supplemental guidance. 24
5.12 SM-10: Custom developed components from third-party suppliers . 24
5.12.1 Requirement . 24
5.12.2 Rationale and supplemental guidance. 25
5.13 SM-11: Assessing and addressing security-related issues . 25
5.13.1 Requirement . 25
5.13.2 Rationale and supplemental guidance. 25

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5.14 SM-12: Process verification . 25
5.14.1 Requirement . 25
5.14.2 Rationale and supplemental guidance. 25
5.15 SM-13: Continuous improvement . 25
5.15.1 Requirement . 25
5.15.2 Rationale and supplemental guidance. 26
6 Practice 2 – Specification of security requirements . 26
6.1 Purpose . 26
6.2 SR-1: Product security context . 27
6.2.1 Requirement . 27
6.2.2 Rationale and supplemental guidance. 27
6.3 SR-2: Threat model . 27
6.3.1 Requirement . 27
6.3.2 Rationale and supplemental guidance. 28
6.4 SR-3: Product security requirements . 28
6.4.1 Requirement . 28
6.4.2 Rationale and supplemental guidance. 28
6.5 SR-4: Product security requirements content . 29
6.5.1 Requirement . 29
6.5.2 Rationale and supplemental guidance. 29
6.6 SR-5: Security requirements review . 29
6.6.1 Requirement . 29
6.6.2 Rationale and supplemental guidance. 29
7 Practice 3 – Secure by design . 30
7.1 Purpose . 30
7.2 SD-1: Secure design principles . 30
7.2.1 Requirement . 30
7.2.2 Rationale and supplemental guidance. 30
7.3 SD-2: Defense in depth design. 31
7.3.1 Requirement . 31
7.3.2 Rationale and supplemental guidance. 32
7.4 SD-3: Security design review . 32
7.4.1 Requirement . 32
7.4.2 Rationale and supplemental guidance. 32
7.5 SD-4: Secure design best practices . 32
7.5.1 Requirement . 32
7.5.2 Rationale and supplemental guidance. 33
8 Practice 4 – Secure implementation . 33
8.1 Purpose . 33
8.2 Applicability . 33
8.3 SI-1: Security implementation review . 33
8.3.1 Requirement . 33
8.3.2 Rationale and supplemental guidance. 34
8.4 SI-2: Secure coding standards . 34
8.4.1 Requirement . 34
8.4.2 Rationale and supplemental guidance. 34
9 Practice 5 – Security verification and validation testing . 34
9.1 Purpose . 34

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9.2 SVV-1: Security requirements testing . 35
9.2.1 Requirement . 35
9.2.2 Rationale and supplemental guidance. 35
9.3 SVV-2: Threat mitigation testing . 35
9.3.1 Requirement . 35
9.3.2 Rationale and supplemental guidance. 35
9.4 SVV-3: Vulnerability testing . 36
9.4.1 Requirement . 36
9.4.2 Rationale and supplemental guidance. 36
9.5 SVV-4: Penetration testing . 36
9.5.1 Requirement . 36
9.5.2 Rationale and supplemental guidance. 36
9.6 SVV-5: Independence of testers . 37
9.6.1 Requirement . 37
9.6.2 Rationale and supplemental guidance. 37
10 Practice 6 – Management of security-related issues . 38
10.1 Purpose . 38
10.2 DM-1: Receiving notifications of security-related issues . 38
10.2.1 Requirement . 38
10.2.2 Rationale and supplemental guidance. 38
10.3 DM-2: Reviewing security-related issues . 38
10.3.1 Requirement . 38
10.3.2 Rationale and supplemental guidance. 39
10.4 DM-3: Assessing security-related issues . 39
10.4.1 Requirement . 39
10.4.2 Rationale and supplemental guidance. 39
10.5 DM-4: Addressing security-related issues . 40
10.5.1 Requirement . 40
10.5.2 Rationale and supplemental guidance. 40
10.6 DM-5: Disclosing security-related issues . 41
10.6.1 Requirement . 41
10.6.2 Rationale and supplemental guidance. 41
10.7 DM-6: Periodic review of security defect management practice . 42
10.7.1 Requirement . 42
10.7.2 Rationale and supplemental guidance. 42
11 Practice 7 – Security update management . 42
11.1 Purpose . 42
11.2 SUM-1: Security update qualification . 42
11.2.1 Requirement . 42
11.2.2 Rationale and supplemental guidance. 42
11.3 SUM-2: Security update documentation . 42
11.3.1 Requirement . 42
11.3.2 Rationale and supplemental guidance. 43
11.4 SUM-3: Dependent component or operating system security update
documentation . 43
11.4.1 Requirement . 43
11.4.2 Rationale and supplemental guidance. 43
11.5 SUM-4: Security update delivery . 43
11.5.1 Requirement . 43

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IEC 62443-4-1:2018 © IEC 2018 – 5 –
11.5.2 Rationale and supplemental guidance. 43
11.6 SUM-5: Timely delivery of security patches . 44
11.6.1 Requirement . 44
11.6.2 Rationale and supplemental guidance. 44
12 Practice 8 – Security guidelines . 44
12.1 Purpose . 44
12.2 SG-1: Product defense in depth . 44
12.2.1 Requirement . 44
12.2.2 Rationale and supplemental guidance. 45
12.3 SG-2: Defense in depth measures expected in the environment . 45
12.3.1 Requirement . 45
12.3.2 Rationale and supplemental guidance. 45
12.4 SG-3: Security hardening guidelines . 45
12.4.1 Requirement . 45
12.4.2 Rationale and supplemental guidance. 46
12.5 SG-4: Secure disposal guidelines . 46
12.5.1 Requirement . 46
12.5.2 Rationale and supplemental guidance. 46
12.6 SG-5: Secure operation guidelines . 46
12.6.1 Requirement . 46
12.6.2 Rationale and supplemental guidance. 47
12.7 SG-6: Account management guidelines . 47
12.7.1 Requirement . 47
12.7.2 Rationale and supplemental guidance. 47
12.8 SG-7: Documentation review . 47
12.8.1 Requirement . 47
12.8.2 Rationale and supplemental guidance. 47
Annex A (informative) Possible metrics . 48
Annex B (informative) Table of requirements . 50
Bibliography . 52

Figure 1 – Parts of the IEC 62443 series. 9
Figure 2 – Example scope of product life-cycle . 10
Figure 3 – Defence in depth strategy is a key philosophy of the secure product life-cycle . 18

Table 1 – Maturity levels . 20
Table 2 – Example SDL continuous improvement activities . 26
Table 3 – Required level of independence of testers from developers . 37
Table B.1 – Summary of all requirements . 50

SIST EN 62443-4-1:2018
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SECURITY FOR INDUSTRIAL AUTOMATION
AND CONTROL SYSTEMS –
Part 4-1: Secure product development lifecycle requirements

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, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
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other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62443-4-1 has been prepared by IEC technical committee 65:
Industrial-process measurement, control and automation.
The text of this International Standard is based on the following documents:
FDIS Report on voting
65/685/FDIS 65/688/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

SIST EN 62443-4-1:2018
IEC 62443-4-1:2018 © IEC 2018 – 7 –
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.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
SIST EN 62443-4-1:2018
– 8 – IEC 62443-4-1:2018 © IEC 2018
INTRODUCTION
This document is part of a series of standards that addresses the issue of security for
industrial automation and control systems (IACS). This document describes product
development life-cycle requirements related to cyber security for products intended for use in
the industrial automation and control systems environment and provides guidance on how to
meet the requirements described for each element.
This document has been developed in large part from the Secure Development Life-cycle
Assessment (SDLA) Certification Requirements [26] from the ISA Security Compliance
Institute (ISCI). Note that the SDLA procedure was based on the following sources:
– ISO/IEC 15408-3 (Common Criteria) [18];
– Open Web Application Security Project (OWASP) Comprehensive, Lightweight Application
Security Process (CLASP) [36];
– The Security Development Life-cycle by Michael Howard and Steve Lipner [43];
– IEC 61508 Functional safety of electrical/electronic/ programmable electronic
safety-related systems [24], and
– RCTA DO-178B Software Considerations in Airborne Systems and Equipment Certification
[28].
Therefore, all these sources can be considered contributing sources to this document.
This document is the part of the IEC 62443 series that contains security requirements for
developers of any automation and control products where security is a concern.
Figure 1 illustrates the relationship of the different parts of IEC 62443 that were in existence
or planned as of the date of circulation of this document. Those that are normatively
referenced are included in the list of normative references in Clause 2, and those that are
referenced for informational purposes or that are in development are listed in the Bibliography.
___________
Figures in square brackets refer to the bibliography.

SIST EN 62443-4-1:2018
IEC 62443-4-1:2018 © IEC 2018 – 9 –
IEC TS 62443-1-1 IEC TR 62443-1-2 IEC TS 62443-1-3 IEC TR 62443-1-4
Master glossary of System security
IACS security life-cycle
Terminology, concepts
terms and abbreviations compliance metrics
and use-cases
and models
IEC 62443-2-1 IEC TR 62443-2-2 IEC TR 62443-2-3 IEC 62443-2-4
Establishing an industrial
Implementation guidance Security program
Patch management in
automation and control for an IACS security
requirements for IACS
the IACS environment
system security program management system
service providers
IEC TR 62443-3-1 IEC 62443-3-2 IEC 62443-3-3
System security
Security technologies
Security risk assessment
requirements and
for industrial automation and system design
security levels
and control systems
IEC 62443-4-1 IEC 62443-4-2
Technical security
Product development
requirements for IACS
requirements
components
Published In development Development planned
Published (under review) Out for comment/vote Adoption planned

IEC
Figure 1 – Parts of the IEC 62443 series
Figure 2 illustrates how the developed product relates to maintenance and integration
capabilities defined in IEC 62443-2-4 and to its operation by the asset owner. The product
supplier develops products using a process compliant with this document. Those products
may be a single component, such as an embedded controller, or a group of components
working together as a system or subsystem. The products are then integrated together,
usually by a system integrator, into an Automation Solution using a process compliant with
IEC 62443-2-4. The Automation Solution is then installed at a particular site and becomes
part of the industrial automation and control system (IACS). Some of these capabilities
reference security measures defined in IEC 62443-3-3 [10] that the service provider ensures
are supported in the Automation Solution (either as product features or compensating
mechanisms). This document only addresses the process used for the development of the
product; it does not address design, installation or operation of the Automation Solution or
IACS.
In Figure 2, the Automation Solution is illustrated to contain one or more subsystems and
optional supporting components such as advanced control. The dashed boxes indicate that
these components are “optional”.
NOTE 1 Automation Solutions typically have a single product, but they are not restricted to do so. In some
industries, there may be a hierarchical product structure. In general, the Automation Solution is the set of hardware
and software, independent of product packaging, that is used to control a physical process (for example,
continuous or manufacturing) as defined by the asset owner.
NOTE 2 If a service provider provides products used in the Automation Solution, then the service provider is
fulfilling the role of product supplier in this diagram.
NOTE 3 If a service provider provides products used in the Automation Solution, then the service provider is
fulfilling the role of product supplier in this diagram.

Policies and
Component System
General
procedures
Status
key
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Industrial automation and control system (IACS)
Operational and maintenance
Asset
Operates (IEC 62443-2-1,
capabilities (policies and procedures)
Owner
IEC 62443-2-4)
+
Automation Solution (IEC 62443-3-3)
Integrates (IEC 62443-2-4,
System
Complementary
Integrator
hardware and
IEC 62443-3-2)
Subsystem 1 Subsystem 2
software
components
Configured for intended environment
Includes a configured instance  of the Product
Product (IEC 62443-4-2)
system, subsystem, or component such as:
Product
Develops (IEC 62443-4-1)
Supplier
Embedded Network Host
Applications
devices components devices
Independent of the intended environment
IEC
Figure 2 – Example scope of product life-cycle

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IEC 62443-4-1:2018 © IEC 2018 – 11 –
SECURITY FOR INDUSTRIAL AUTOMATION
AND CONTROL SYSTEMS –
Part 4-1: Secure product development lifecycle requirements

1 Scope
This part of IEC 62443 specifies process requirements for the secure development of
products used in industrial automation and control systems. It defines a secure development
life-cycle (SDL) for the purpose of developing and maintaining secure products. This life-cycle
includes security requirements definition, secure design, secure implementation (including
coding guidelines), verification and validation, defect management, patch management and
product end-of-life. These requirements can be applied to new or existing processes for
developing, maintaining and retiring hardware, software or firmware for new or existing
products. These requirements apply to the developer and maintainer of the product, but not to
the integrator or user of the product. A summary list of the requirements in this document can
be found in Annex B.
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, abbreviated terms, acronyms and conventions
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC TR 62443-1-2 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
abuse case
test case used to perform negative operations of a use case
Note 1 to entry: Abuse case tests are simulated attacks often based on the threat model. An abuse case is a type
of complete interaction between a system and one or more actors where the results of the interaction are
intentionally intended to be harmful to the system, one of the actors or one of the stakeholders in the system.
___________
Under consideration.
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3.1.2
access control
protection of system resources against unauthorized access
3.1.3
access control
process by which use of system resources is regulated according to a security policy and is
permitted by only authorized users according to that policy
Note 1 to entry: Access control includes identification and authentication requirements specified in other parts of
the IEC 62443 series.
3.1.4
administrator
user who has been authorized to manage security policies/capabilities for a product or system
3.1.5
asset
physical or logical object owned by or under the custodial duties of an organization, having
either a perceived or actual value to the organization
Note 1 to entry: In this specific case, an asset is an object that is part of an IACS.
3.1.6
asset owner
individual or organization responsible for one or more IACSs
3.1.7
attack surface
physical and functional interfaces of a system that can be accessed and, therefore, potentially
exploited by an attacker
3.1.8
audit log
event log that requires a higher level of integrity protection than provided by typical event logs
Note 1 to entry: Audit logs are used to protect against claims that repudiate responsibility for an action.
3.1.9
authentication
provision of assurance that a claimed characteristic of an identity is correct
Note 1 to entry: Not all credentials used to authenticate an identity are created equally. The trustworthiness of the
credential is determined by the configured authentication mechanism. Hardware or software-based mechanisms
can force users to prove their identity before accessing data on a device. A typical example is proving the identity
of a user usually through an identity provider.
Note 2 to entry: Authentication includes verifying human users as well as non-human users such as devices or
processes.
3.1.10
automation solution
control system and any complementary hardware and software components that have been
installed and configured to operate in an IACS
Note 1 to entry: Automation Solution is used as a proper noun in this part of the IEC 62443 series.
Note 2 to entry: The difference between the control system and the Automation Solution is that the control system
is incorporated into the Automation Solution design (for example, a specific number of workstations, controllers and
devices in a specific configuration), which is then implemented. The resulting configuration is referred to as the
Automation Solution.
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IEC 62443-4-1:2018 © IEC 2018 – 13 –
Note 3 to entry: The Automation Solution can be comprised of components from multiple suppliers including the
product supplier of the control system.
3.1.11
banned function
software method that is no longer recommended to be used in software because more secure
versions exist with less propensity for misuse
Note 1 to entry: Banned functions are sometimes called banned methods or banned Application Programming
Interfaces (APIs).
3.1.12
best practices
guidelines for securely designing, developing, testing, maintaining or retiring products that the
supplier has determined are commonly recommended by both the security and industrial
automation com
...