ISA/IEC 62443 is a series of standards developed by the International Society of Automation (ISA) and the International Electrotechnical Commission (IEC) focused on cybersecurity for industrial automation and control systems (IACS). These standards provide a comprehensive framework to safeguard industrial networks from cyber threats, addressing aspects such as risk assessment, system security architecture, and operational security measures. ISA/IEC 62443 aims to enhance the security of critical infrastructure by establishing best practices and guidelines for system integrators, asset owners, and product suppliers. By adhering to these standards, organizations can systematically identify vulnerabilities, implement robust defenses, and maintain the integrity, confidentiality, and availability of their industrial operations.