A storage processing unit configured to store, in a storage unit, first data output by a device or any one of multiple devices in association with a first feature context related to the first data, and an analyzing unit configured to obtain a second feature context related to second data in a case where the second data is received from the device or any one of the multiple devices, and analyze an anomaly of the received second data based on the received second data and the obtained second feature context and based on the first data and the first feature context stored in the storage unit, are provided.