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公开(公告)号:US20220338013A1
公开(公告)日:2022-10-20
申请号:US17849273
申请日:2022-06-24
Inventor: Manabu MAEDA , Tomoyuki HAGA , Yuji UNAGAMI , Naohisa NISHIDA , Masashi HISAI , Hitoshi TAHARA , Kenji HARADA , Takashi KURANO
IPC: H04W12/121
Abstract: An unauthorized communication detection method detects an unauthorized communication message on an in-facility network over which at least two devices including a first device and a second device are communicably connected, and includes: receiving, from the first device, a communication message transmitted from the first device to the second device; obtaining, when the communication message is received from the first device, first information indicating a state of at least one of (a) a person in a facility and (b) the at least two devices, and determining whether to execute processing pertaining to a device control command that controls the second device when the communication message received from the first device is a communication message including the device control command, the determining being performed based on the first information; and executing the processing pertaining to the device control command when the determining determines to execute the processing.