What are the key cybersecurity considerations for industrial control systems?

Key considerations: network segmentation (separate OT from IT using DMZ, firewalls), defense in depth (multiple security layers), access control (role-based access, authentication, least privilege), patch management (balance security updates with system stability), secure remote access (VPN, jump servers, session recording), monitoring and detection (intrusion detection, anomaly detection), incident response planning, and supply chain security. Standards: IEC 62443 for industrial automation, NIST framework. SIS networks require even stricter isolation. Regular vulnerability assessments and security awareness training essential.