Cybersecurity measures are rapidly expanding from IT, which is primarily used in office work, to the OT that makes up the infrastructure of all industries, leveraging DX and AI. The challenge of moving away from the traditional AS IS-type DX to TO BE-type DX, which assumes the existence and use of AI, is beginning to take hold, particularly in cutting-edge industries such as semiconductors and biotechnology. The previous vertically integrated OT system known as ""Stove & Pipe"" is evolving into a horizontally distributed platform-based system. Furthermore, system and data integration, which was previously limited to within a company, is rapidly expanding to supply chain networks made up of companies, and cybersecurity measures are increasingly recognized as essential measures not only within companies but also between companies. This presentation will discuss the current state of OT cybersecurity measures and policies both domestically and internationally.