The outsourcing of processes is not something we can consider new. In fact, the contrary is true. And in particular, in terms of how it applies to ICT (Information and Communication Technology), it is common for at least part of our systems to be accessed by third parties or managed directly by third parties.
Control system standards are being updated in order to support and regulate emerging features in these environments. One of the most consulted standards and used as an example in industrial control systems, the ISA99, has also evolved into the IEC 62443 thanks to the International Electrotechnical Commission.