Overview of the ISA/IEC 62443 Standards & Effective IACS Security

This blog provides a concise overview of the ISA/IEC 62443 series, describing its objective to improve the security, reliability, and integrity of industrial automation and control systems through a risk-based standards framework. It organizes the series into four groups—General; Policies and Procedures; System Requirements; and Component Requirements—and summarizes key parts within each group (e.g., terminology, security program establishment, system risk assessment, and secure product development), noting intended audiences such as asset owners, product suppliers, and service providers.