The proof of concept Critical Infrastructure Security Analytics Network addresses the need to implement the NIS Directive. The prototyped Critical Infrastructure Security Operation Centre detects threats and applies mitigation actions to Smart Grids. The prototyped Next Generation Open Real Time Smart Meter (NORM) is based on the unbundled meter concept. The prototyped ABC Defender offers deep analysis of data communication patterns. The prototyped 5G Breakout Gateway functionality offers new support for critical infrastructures. The prototyped Low-Cost PMU is expected to have a positive impact on the rapidly growing PMU market. The Physical unclonable function (PUF) is a full-stack cyber-physical solution assuring the security status of devices. The prototyped Double Virtualisation technique offers system resilience enhancements. A new study item on cyber-security proposed by SUCCESS for standardization by ETSI was adopted.