network diagrams , secure remote access , Siem, Endpoint Security, Vulnerability Management, System Architecture, PAM, industrial network segmentation, industrial DMZs, proof-of-compliance documentation, OT ICS cybersecurity principles, access control monitoring, industrial networks, regulatory evidence collection, audit readiness, plant systems, firewall rules, cyber hygiene, KSA cybersecurity requirements, control matrices, system hardening, hardening checklists, monitoring configurations, asset inventories, cybersecurity testing