Composed of 12 staff and attached to the General Secretariat, the IT department has as its essential mission the maintenance of the IT network and the management of the technical architecture. One of the weaknesses of the information system is a lack of integration of this service in the supervision of the various business applications, which are mostly managed directly by the departments. The company does not have a map showing the fragilities of the applications, as recommended by the National Agency for Information Systems Security (ANSSI), as well as the different data flows exchanged between the price management systems, billing and accounting. Applications are heterogeneous and each based on a specific and isolated platform.