 Things are getting connected even nowadays and even more in future because the Internet is getting becoming Internet of Actions with robots, drugs, and driverless cars, etc. So we feel Internet is becoming Internet of Actions to provide services at the offline, so we call it Internet of Actions. So cyber security is not really limited to the cyber space mainly. It will be extended to the physical space with much more advanced security threats. So much more advanced security solutions should be considered. For example, quantum key distribution, also quantum random number generator, because we think there will be much advanced security threats when the quantum computing is available. So when quantum computing is available, all security measures based on mathematical solutions will be broken with quantum computing, so much future-proof technology should be considered to provide actual future-proof security solutions such as quantum key distribution and quantum random number generator.