Abstract: An anomaly detection electronic controller performs anomaly detection processing and is connected to a network, which a plurality of electronic controllers uses for communication. The anomaly detection electronic controller includes an anomaly detection processor that performs anomaly detection processing regarding a data frame. The anomaly detection controller also includes an anomaly detection processing requester that decides an anomaly detection processing timing when receiving the data frame, the anomaly detection processing timing being a reception timing of one or multiple fields in the data frame. The anomaly detection processor further performs the anomaly detection processing regarding the data frame at the anomaly detection processing timing decided by the anomaly detection processing requester.

Abstract: An electronic control unit (ECU) is provided. The electronic control unit is connected to a first network in an onboard network system. The onboard network system includes the first network and a second network. In the first network, first-type frames are transmitted following a first communication protocol. In the second network, second-type frames are transmitted following a second communication protocol. The electronic control unit generates first-type frames following the first communication protocol, and transmits the generated first-type frames to the first network. The first-type frame includes first information and second information. The first information serves as a base for a second-type frame to be transmitted to the second network. The second information indicates information that the first-type frame is to be transmitted to the second network.

Abstract: A gateway connected to a bus, a bus, and the like used by a plurality of electronic control units for communication includes a frame communication unit that receives a frame, a transfer control unit that removes verification information used to verify a frame from the content of the frame received by the frame communication unit and transfers the frame to a destination bus or that adds verification information to the content of the frame and transfers the frame to the destination bus, and the like.

Abstract: A vehicle anomaly detection server includes: a communicator that communicates with a vehicle to receive a log of an in-vehicle network in the vehicle; a processor; and a memory including at least one set of instructions that, when executed by the processor causes the processor to perform operations including: selecting, when information indicating that an anomaly is occurring to a first vehicle among vehicles is obtained by the processor, an anomaly-related vehicle from among the vehicles based on the anomaly, the first vehicle being the vehicle that communicates with the communicator; transmitting, to the anomaly-related vehicle via the communicator, a first request to transmit a log of an in-vehicle network in the anomaly-related vehicle; and determining whether an anomaly is occurring to the anomaly-related vehicle, based on information indicated by the log transmitted from the anomaly-related vehicle and received by the communicator.

Abstract: A data analysis apparatus includes: a processor; and a memory including a set of instructions that, when executed by the processor causes the processor to perform operations including: obtaining anomaly analysis results each including information identifying anomaly data of first and second vehicles provided with an in-vehicle network including one or more networks; identifying, for each of the first and second vehicles, a primary ECU having higher relevance to the anomaly data among ECUs connected to the in-vehicle network; identifying, for each of the first and second vehicles, ECUs connected to a network in the one or more networks to which the primary ECU is connected as a secondary ECU set; and identifying an ECU included in both of the secondary ECU set identified for the first vehicle and the secondary ECU set identified for the second vehicle and satisfying a predetermined condition as an anomaly-relevant ECU.

Abstract: A gateway connected to a bus, a bus, and the like used by a plurality of electronic control units for communication includes a frame communication unit that receives a frame, a transfer control unit that removes verification information used to verify a frame from the content of the frame received by the frame communication unit and transfers the frame to a destination bus or that adds verification information to the content of the frame and transfers the frame to the destination bus, and the like.

Abstract: An anomaly detection electronic controller performs anomaly detection processing and is connected to a bus, which a plurality of electronic controllers use for communication to communicate following a Controller Area Network (CAN) protocol. The anomaly detection electronic controller includes an anomaly detection processor that performs anomaly detection processing regarding a data frame. The anomaly detection controller also includes an anomaly detection processing requester that decides an anomaly detection processing timing in accordance with a state of a vehicle in which the bus is installed when receiving the data frame, the anomaly detection processing timing being a reception timing of one or multiple fields in the data frame. The anomaly detection processor further performs the anomaly detection processing regarding the data frame at the anomaly detection processing timing decided by the anomaly detection processing requester.

Abstract: A method for use in a network communication system including a plurality of electronic controllers that communicate with each other via a bus in accordance with a Controller Area Network (CAN) protocol determines whether or not content of a predetermined field in a frame which has started to be transmitted meets a predetermined condition indicating fraud. In a case where the content of the predetermined field meets the predetermined condition, an error frame is transmitted before an end of the frame is transmitted. A number of times the error frame is transmitted is recorded for each identifier (ID) represented by content of an ID field included in a plurality of frames which has been transmitted. A malicious electronic controller is determined in accordance with the number of times recorded for each ID.

Abstract: A vehicle monitoring apparatus includes: a first communicator that receives specifying information for specifying a target vehicle from a server; and an acquirer that acquires driving information from the target vehicle, the driving information being information regarding driving of the target vehicle specified by the specifying information received by the first communicator. The first communicator transmits the driving information acquired by the acquirer to the server. For example, the acquirer may acquire the driving information obtained from the target vehicle through communication.

Abstract: In a fraud-detection method for use in an in-vehicle network system including a plurality of electronic control units (ECUs) that exchange messages on a plurality of networks, a plurality of fraud-detection ECUs each connected to a different one of the networks, and a gateway device, a fraud-detection ECU determines whether a message transmitted on a network connected to the fraud-detection ECU is malicious by using rule information stored in a memory. The gateway device receives updated rule information transmitted to a first network among the networks, selects a second network different from the first network, and transfers the updated rule information only to the second network. A fraud-detection ECU connected to the second network acquires the updated rule information and updates the rule information stored therein by using the updated rule information.

Abstract: A gateway that notifies a fraud detection server located outside a vehicle of information about an in-vehicle network system including an in-vehicle network includes: a priority determiner that determines a priority using at least one of: a state of the vehicle including the in-vehicle network system; an identifier of a message communicated on the in-vehicle network; and a result of fraud detection performed on the message; a frame transmitter-receiver that transmits and receives the message communicated on the in-vehicle network; a frame interpreter that extracts information about the in-vehicle network based on the message received by the frame transmitter-receiver; and a frame uploader that notifies the fraud detection server of notification information including the priority and the information about the in-vehicle network.

Abstract: The monitoring device includes a receiver and a processor. The receiver receives a frame from a communication network. The processor performs a first determination that determines whether the frame is illegal based on a result of message authentication for the frame and a second determination that determines whether the frame is illegal based on a state of the frame and a predetermined rule. In addition, the processor executes, in accordance with a combination of a result of the first determination and a result of the second determination, at least one of processing for the frame, processing for a transmission source device of the frame, change of contents to be notified to an external device, and change of priority of notification to the external device.

Abstract: A fraud detection method for use in an in-vehicle network system including a plurality of electronic control units that communicate with one another via an in-vehicle network is provided. The method includes receiving at least one data frame sent to the in-vehicle network, verifying a specific identifier in the received data frame only when the received data frame is event-driven data and a state of a vehicle having the in-vehicle network system mounted therein is a predetermined state, detecting the received data frame as an authenticated data frame when the verifying is successful, and detecting the received data frame as a fraudulent data frame when the verifying fails. The predetermined state of the vehicle is the vehicle traveling.

Abstract: A method for use in a network communication system including a plurality of electronic controllers that communicate with each other via a bus in accordance with a Controller Area Network (CAN) protocol includes determining whether or not content of a predetermined field in a transmitted frame meets a predetermined condition indicating fraud, transmitting an error frame before an end of the frame is transmitted in a case where it is determined that the frame meets the predetermined condition, recording a number of times the error frame is transmitted, for each identifier (ID) represented by content of an ID field included in a plurality of frames which has been transmitted, and providing a notification in a case where the number of times recorded for an ID exceeds a predetermined count.

Abstract: In a fraud-detection method for use in an in-vehicle network system including a plurality of electronic control units (ECUs) that exchange messages on a plurality of buses, a plurality of fraud-detection ECUs each connected to a different one of the buses, and a gateway device, a fraud-detection ECU determines whether a message transmitted on a bus connected to the fraud-detection ECU is malicious by using rule information stored in a memory. The fraud-detection ECU transmits an error message including a message identifier of a message determined to be malicious. The gateway device receives updated rule information transmitted to a first bus among the buses, selects a second bus different from the first bus, and transfers the updated rule information only to the second bus. A fraud-detection ECU connected to the second bus acquires the updated rule information and updates the rule information stored therein by using the updated rule information.

Abstract: A method for a fraud detecting controller connected to networks for communication by a plurality of controllers, includes, storing fraud detection rules, determining whether a message transmitted on the network connected to the fraud detecting controller conforms to the rules, receiving data including updated fraud detection rules and network type information indicating one network type to which the updated fraud detection rules are to be applied; and determining whether a vehicle having an on-board network is running, the on-board network including the plurality of controllers. When the vehicle is running, additionally determining whether the network type information indicates a drive network which is connected to a controller related to vehicle travel, when the network type information indicates the drive network, not updating to the updated fraud detection rules, and when the network type information does not indicate the drive network, updating to the updated fraud detection rules.

Abstract: A first device, upon detecting participation in an authentication system, transmits new and old identification information of a first certificate revocation list that the first device manages to a second device. In a case where the new and old identification information of a second certificate revocation list that the second device manages is older than the new and old identification information of the received first certificate revocation list, the second device transmits a transmission request for the first certificate revocation list to the first device. Upon receiving the transmission request for the first certificate revocation list from the second device, the first device transmits the first certificate revocation list to the second device. the second device updates the second certificate revocation list using the received first certificate revocation list.

Abstract: An anomaly handling method using a roadside device is disclosed. The method includes receiving, from a vehicle, an anomaly detection notification, which includes level information indicating a level affecting safety, and a location of the vehicle. The method also includes obtaining a location of the roadside device and determining whether a distance between the location of the vehicle and the location of the roadside device is within a predetermined range. When the distance is within the predetermined range and shorter than a first predetermined distance, transmitting the received anomaly detection notification externally from the roadside device. When the distance is within the predetermined range and is longer than or equal to the first predetermined distance, changing to decrement a level indicated by the level information, and transmitting changed anomaly detection notification. When the distance is not within the predetermined range, not transmitting the received anomaly detection notification.

Abstract: An anomaly detection electronic controller performs anomaly detection processing and is connected to a bus, which a plurality of electronic controllers use for communication to communicate following a Controller Area Network (CAN) protocol. The anomaly detection electronic controller includes an anomaly detection processor that performs anomaly detection processing regarding a data frame. The anomaly detection controller also includes an anomaly detection processing requester that decides an anomaly detection processing timing in accordance with a state of a vehicle in which the bus is installed when receiving the data frame, the anomaly detection processing timing being a reception timing of one or multiple fields in the data frame. The anomaly detection processor further performs the anomaly detection processing regarding the data frame at the anomaly detection processing timing decided by the anomaly detection processing requester.

Abstract: Provided is a fraud detection rule updating method enabling the updating of rules that serve as the basis for detecting malicious frames as necessary in an on-board network system. In an on-board network system equipped with multiple electronic control units (ECUs) that communicate via buses and fraud detecting ECUs that determine, based on fraud detection rules, whether messages transmitted on the buses conform to the rules, a fraud detection rule updating method is used in which delivery data including updated fraud detection rules is received from a server external to the on-board network system, and if a certain update condition is satisfied, the fraud detection rules in a fraud detecting ECU are updated to the updated fraud detection rules.