According to one embodiment, a storage device includes a non-volatile memory, an interface circuit, a first control circuit, a wireless transmitting and receiving circuit, and a second control circuit. The interface circuit is electrically connected to the host device and is capable of communicating the host device. The first control circuit performs control of writing write data received from the host device via the interface circuit into the non-volatile memory. The wireless transmitting and receiving circuit is capable of wirelessly communicating with a wireless device. The second control circuit determines whether or not the write data include a predetermined type of data based on measurement data of the write data, and stops wireless communication performed by the wireless transmitting and receiving circuit if it is determined that the write data include the predetermined type of data.