Safe reactor operations and the prevention of radiological releases, radiological sabotage and other threats to public safety are of paramount importance at all nuclear power plants. Continuous operations are also important as power outages can pose dangerous public safety risks. All secure nuclear power sites, therefore, deploy both comprehensive physical and cyber security measures.

If malicious attackers ever gain access to a nuclear generating unit’s Distributed Control System (DCS), sabotage of reliability-critical and even safety-critical operations is possible. The risk of such sabotage is unacceptable. Nuclear power plants cybersecurity and industrial security standards and regulations require operators to deploy the strongest practical measures to prevent the compromise of nuclear control and safety networks. The question is – how to achieve 100% protection from remote cyber threats?