US 12,342,169 B2
Unauthorized communication detection method, unauthorized communication detection device, and recording medium
Manabu Maeda, Osaka (JP); Tomoyuki Haga, Nara (JP); Yuji Unagami, Osaka (JP); Naohisa Nishida, Osaka (JP); Masashi Hisai, Osaka (JP); Hitoshi Tahara, Kyoto (JP); Kenji Harada, Osaka (JP); and Takashi Kurano, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Jun. 24, 2022, as Appl. No. 17/849,273.
Application 17/849,273 is a continuation of application No. PCT/JP2021/008006, filed on Mar. 2, 2021.
Claims priority of application No. 2020-036571 (JP), filed on Mar. 4, 2020.
Prior Publication US 2022/0338013 A1, Oct. 20, 2022
Int. Cl. H04W 12/121 (2021.01)
CPC H04W 12/121 (2021.01) 18 Claims
OG exemplary drawing
 
1. An unauthorized communication detection method that 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 to each other, the unauthorized communication detection method comprising:
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 at least one from among (a) a state of a person in a facility and a state of at least one of the at least two devices or (b) states of the at least two devices;
determining whether the communication message received from the first device is a communication message that is unauthorized based on the first information when the communication message includes a device control command that controls the second device;
when the communication message is determined to be unauthorized, then determining to not execute processing pertaining to the device control command, and when the communication message is determined to be authorized, then determining to execute the processing pertaining to the device control command; and
executing the processing pertaining to the device control command when the determining determines to execute the processing.