1 Scope
This part of IEC 62443 provides a current assessment of various cybersecurity tools, mitigation counter-measures,
and technologies that may effectively apply to the modern electronically based IACSs
regulating and monitoring numerous industries and critical infrastructures. It describes
several categories of control system-centric cybersecurity technologies, the types
of products available in those categories, the pros and cons of using those products
in the automated IACS environments, relative to the expected threats and known cyber vulnerabilities, and, most important, the preliminary recommendations and guidance for using these
cybersecurity technology products and/or countermeasures.
The concept of IACS cybersecurity as applied in this technical report is in the broadest possible sense,
encompassing all types of components, plants, facilities, and systems in all industries
and critical infrastructures. IACSs include, but are not limited to:
Hardware (e.g., data historian servers) and software systems (e.g., operating platforms, configurations, applications) such
as Distributed Control Systems (DCSs), Programmable Logic Controllers (PLCs), Supervisory Control and Data Acquisition (SCADA) systems, networked electronic sensing systems, and monitoring, diagnostic, and assessment
systems. Inclusive in this hardware and software domain is the essential industrial
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