US 11,667,264 B2
Unauthorized intrusion prevention device, unauthorized intrusion prevention method, and unauthorized intrusion prevention program
Reiichirou Imoto, Kariya (JP); Takeshi Sugashima, Kariya (JP); and Masumi Egawa, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jul. 9, 2021, as Appl. No. 17/371,146.
Claims priority of application No. JP2020-120685 (JP), filed on Jul. 14, 2020.
Prior Publication US 2022/0017041 A1, Jan. 20, 2022
Int. Cl. B60R 25/20 (2013.01); B60R 25/30 (2013.01); G08B 13/22 (2006.01)
CPC B60R 25/2009 (2013.01) [B60R 25/30 (2013.01); G08B 13/22 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An unauthorized intrusion prevention device that, in response to detection of abnormality in an electronic control device mounted in a movable body and having a protection function against unauthorized intrusion and a function other than the protection function, gives an instruction for executing measures for the movable body, the unauthorized intrusion prevention device comprising:
an acquirer unit that acquires a log indicating first information related to the protection function of the electronic control device and a log indicating second information related to the function of the electronic control device other than the protection function;
a first determiner unit that, using the first information, performs a determination of whether the protection function is normal or abnormal;
a second determiner unit that, using the second information, performs a determination of whether the function other than the protection function is normal or abnormal; and
a measures determiner unit that, using a result of the determination by the first determiner unit and a result of the determination by the second determiner unit, determines, as the measures, a blocking method of blocking unauthorized information in the movable object, wherein
when the first determiner unit determines that the protection function is normal, the measures determiner unit sets the measures to the blocking method that is based on the protection function;
when the first determiner unit determines that the protection function is abnormal and the second determiner unit determines that the function other than the protection function is normal, the measures determiner unit sets the measures to the blocking method that includes stopping an output operation from the electronic control device; and
when the first determiner unit determines that the protection function is abnormal and the second determiner unit determines that the function other than the protection function is abnormal, the measures determiner unit sets the measures to the blocking method that includes stopping an input operation to another electronic control device located in a lower layer than the electronic control device or the blocking method that is based on a protection function of the another electronic control device.