Introduction- History, Architecture, Components, Functions, Fundamental principles and concepts of SCADA, DCS, PLCs, Field components, Real-Time Operating systems and Ladder Logic, Communications and OLE for Process Control (OPC), ICS Lifecycle Challenges, Physical Security, Network Architecture, models and design examples PLC – Role in Automation, PLC-SCADA Communications, SCADA Protocols, Security – ICS Attack Surface, Threats and Attack Routes, Attacks on Control Servers, Network Communications and Web Attacks, Security Standards and Mititgation, Defending ICS networks, servers and devices – Firewalls, NAC, Enforcement Zone Devices, DMZ, Honepots, Case Studies of ICS