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Application & OT Security · Advanced

IEC 62443-4-1

The part of IEC 62443 that specifies secure product development lifecycle requirements for suppliers of industrial automation components.

Definition

It defines eight practices: security management, specification of security requirements, secure by design, secure implementation, security verification and validation testing, management of security-related issues, security update management and security guidelines, with maturity levels 1-4. It is the ICS counterpart of the SSDLC.

Example

An HMI software vendor is audited against 62443-4-1 maturity level 3.

Exam tip

Link to SSDLC concepts; it applies to product suppliers, not asset owners.

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