CS Group SA engages in the design, integration, and operation of critical communication and information systems. The company operates through the following segments: Defense & Security, Space, Aeronautics, Energy & Industry, and Other Sectors. The Defense & Security segment engages in security and protection for infrastructures and sensitive sites. The Space segment engage in space applications and systems. The Aeronautics segment designs and develops embedded real-time critical software and supports clients throughout the life cycle of the systems from digital design to maintenance, while responding to competitiveness and cost optimization requirements. The Energy & Industry segment provides industries performance and risk management services. The Other Sectors segment provides passenger information, operational support, mobility, secure systems. It also includes nuclear risk management, and industrial computing. The company was founded on December 13, 1968 and is headquartered in Le Plessis Robinson, France.