Burt G. Look 
Handbook of SCADA/Control Systems Security [PDF ebook] 

This comprehensive handbook covers fundamental security concepts, methodologies, and relevant information pertaining to supervisory control and data acquisition (SCADA) and other industrial control systems used in utility and industrial facilities worldwide. Including six new chapters, six revised chapters, and numerous additional figures, photos, and illustrations, it addresses topics in social implications and impacts, governance and management, architecture and modeling, and commissioning and operations. It presents best practices as well as methods for securing a business environment at the strategic, tactical, and operational levels.