Cyber security - security strategy for distribution management system and security architecture considerations

We cover some practices and methods in creating effective cyber security architectures for substation and distribution automation systems and products which are robust enough to withstand cyber-attacks and resilient enough to recover in the event of security compromise and keeping device functional and executing its core functionality even during attack. This is achieved by a defense-in-depth strategy starting from product design, a dedicated security test center, secure system architecture, patch management and security audits. Understanding practices and processes help in handling cyber security in a holistic manner with an explicit focus on operational performance.