Context and challenges
This client, a major player in the nuclear sector, wanted to carry out a diagnostic of the logical safety of its nuclear power plants on all its tertiary sites in France:
Several hundred sites (offices, training centres, R&D, tertiary buildings of nuclear, thermal or hydraulic power plants) are concerned by this global approach.
In this context, this client has entrusted Assystem with the establishment of a methodology for studying the security of its tertiary sites, from a cybersecurity perspective.
Development by Assystem of a methodology based on a risk-based approach, inspired by the ANSSI (French National Agency for the Security of Information Systems) methodologies for the classification of industrial systems and EBIOS (Expression of Needs and Identification of Security Objectives) and enabling:
Three pilot sites were studied during the mission for the development, testing and fine-tuning of this methodology, with the aim of future application to several hundred sites.