KN-US, founded in 2019, is a venture company specializing in physical security, developing security equipment utilizing radio wave application software technology. Its flagship product, SPYOUT-II, is a system that detects frequencies up to 6GHz to identify eavesdropping, wireless backdoor hacking, and other threats. It has been designated as an Innovative Startup Product by the Public Procurement Service and is used in financial institutions and other sectors. The company has recently secured investments to enhance technology development and is working on security solutions incorporating AI and big data. Headquartered in Mapo-gu, Seoul, KN-US supplies eavesdropping detection devices, voice recording prevention systems, and other security equipment.