The EDS system developed by engineers of the Polish Transition Technologies Group, watches over the cybersecurity of the American nuclear reactor AP1000. The reactor designed by Westinghouse is one of the technologies considered in the context of the development of Polish nuclear power. The EDS (Enterprise Data Server) System created by Transition Technologies is a standard element of the AP1000 block IT platform. Its task is to download current process data from the nuclear power plant control system, replicate it, and then present it to users for further analysis - all in a safe manner for the control system.