Cybersecurity for digital generation perimeter

When malicious attackers gain access to an industrial control system they are able to sabotage industrial control and safety processes, leading to costly outages, damaged turbines, threats to personnel safety and even environmental disasters. This is why NERC CIP and other industrial security regulations urge operators to thoroughly secure IT/OT interconnections in order to protect these high-risk access points against cyber terrorism and other attacks. The question is – how to achieve 100% protection from remote cyber threats?