What Changed in IEC 62443-2-1 Edition 2
The second edition of IEC 62443-2-1, titled “Security for industrial automation and control systems – Part 2-1: Security program requirements for IACS asset owners”, has been published. It is a long-awaited step toward better cybersecurity for industrial automation and control systems (IACS). The update comes at a time when threats to critical infrastructure and industrial plants keep growing and becoming more complex. For an overview of the whole series, see our page on IEC 62443.
Contents
Why IEC 62443-2-1 needed an update
The first edition of the standard was published more than a decade ago. It no longer reflected current requirements and technological developments in industrial cybersecurity. Threats evolve quickly, and industrial systems are increasingly connected. A fundamental revision was therefore unavoidable.
Main changes in IEC 62443-2-1 Edition 2
The second edition brings several significant improvements:
- Revised structure: Security program elements (SPEs) present the requirements in a clearer and more structured way. This makes the standard considerably easier to understand and implement.
- Less redundancy: The new edition minimizes overlaps with existing information security management systems, in particular ISO/IEC 27001. This makes it easier to integrate into existing security structures.
- Maturity model: A newly introduced maturity model allows companies to evaluate the progress of their security measures and improve them step by step.
- Legacy systems: The standard explicitly addresses the challenges of securing older systems with a long service life.
What IEC 62443-2-1 means for industry
The revision of IEC 62443-2-1 gives companies the opportunity to take their OT security management to a new level. Its alignment with existing information security management systems such as ISO/IEC 27001 supports an integrated approach to cybersecurity across all parts of the company.
The maturity model in particular allows organizations to improve their security measures step by step and to develop long-term strategies. This matters most where resources are limited and security improvements have to be implemented over a longer period.
Outlook
IEC 62443-2-1 Edition 2 marks an important step in the development of industrial cybersecurity. It gives companies an updated and practical framework to improve their security programs and protect themselves better against growing cyber threats.
The challenge now is to put the new standard into practice effectively. This requires technical and organizational changes. In many organizations, it also requires a cultural change, so that cybersecurity is understood as an integral part of all industrial processes.
As industrial systems become more digital and connected, IEC 62443-2-1 lays an important foundation for the security of industry in the years ahead. It allows companies to bring their OT security to a level comparable with modern IT security standards and opens a new chapter in industrial cybersecurity.
