Fecha de publicación: 17/05/2018 Fuente: Wipo "IOT" The purpose of the present invention is to provide an IoT data brokerage system that brokers the distribution of IoT data acquired by IoT devices. The IoT data brokerage system according to the present invention is provided with: an actual data storage unit which stores, as actual data, IoT data including data values and metadata indicating attributes of the data values; and a dummy data storage unit which stores, as dummy data, both the metadata included in the actual data, and dummy values obtained by changing some or all of the data values in the actual data. Upon receiving a request for a search of the dummy data storage unit from a data acquisition side system for acquiring IoT data, the IoT data brokerage system transmits dummy data matching the search criteria to the data acquisition side system, and also transmits, to the data acquisition side system, actual data corresponding to dummy data selected from among the transmitted dummy data.