The risk of cyber threats in the Industrial control systems (ICS) and SCADA systems has escalated in a historical pace as critical infrastructures, like power substation, oil and gas refinery, water treatment, and smart factory are connected by mainstream network protocols. However, the malicious attacks, namely Stuxnet worms, WannaCry ransomware, have evolved to penetrate into ICS networks from multiple paths on the interconnected networks. Therefore, there is an urgent need for more comprehensive, multi-layer network security solutions to protect both the IT and OT (Operating Technologies) networks in critical infrastructures

Multi-layer OT+IT Security