Denso Corporation

Keigo Nagara

Taiji Abe

Masumi Egawa

Reiichirou Imoto

Takeshi Sugashima

Naoya Ishida

Reiichiro Imoto

Katsuya Tanaka

A center device is provided that receives a log from vehicle-mounted equipment transmitting the log based on an external transmission rule and analyzes the log to detect a cyber attack. Based on a result of the detecting, the center device determines update of the external transmission rule. The center devices transmits an external transmission rule update instruction. As attack depth of the cyber attack is deeper, the center device sets an external transmission target to the log that is generated in a deeper layer among layers in which constituent elements of the vehicle-mounted equipment are defined.

Log management device and center device

An attack analyzer includes: a common log acquisition unit acquiring a common security log including abnormality information indicating abnormality detected by an electronic control system, and a common abnormality position indicating an abnormality position of the abnormality converted to be common among the electronic control system and other electronic control systems; an attack/abnormality relationship table storage unit storing an attack/abnormality relationship table; an estimation unit; and an output unit outputting attack information including the attack type.

Attack analyzer, attack analysis method and attack analysis program

A log analysis device is provided. The log analysis device receives a log indicating status of an electronic control system mounted in a movable object from the electronic control system, analyzes an abnormality in the electronic control system by using the log received. Depending on a result of the analyzing, the log analysis device determines, on a log-by-log basis, priority for the electronic control system to transmit the log to the log analysis device. Based on the priority determined, the log analysis device generates instruction information that gives an instruction for controlling transmission of the log, and transmits the instruction information to the electronic control system.

Log analysis device

A log transmission controller includes a log acquirer, a priority storage, an update instruction acquirer, a priority updater and a transmitter. The log acquirer acquires a log indicating respective states of electronic control units connected to the log transmission controller equipped in a moving object. The priority storage stores priority information indicating a priority for transmitting the log to a server. The update instruction acquirer acquires a first update instruction generated by an update instructor for updating the priority information, and second and third update instructions generated by the server for updating the priority information. The priority updater updates the priority information based on the update instruction. The transmitter transmits the log based on the priority. The first and second update instructions are for updating the priority to be higher than a predetermined priority, and the third update instruction is for updating the priority to the predetermined priority.

Log transmission controller

A log transmission controller includes a log acquirer, a priority storage, an update instruction acquirer, a priority updater and a transmitter. The log acquirer acquires a log indicating respective states of electronic control units connected to the log transmission controller, which is equipped in a moving object. The priority storage stores priority information indicating a priority for transmitting the log to a server, which is disposed at exterior of the moving object. The update instruction acquirer acquires an update instruction, which is generated by an update instructor equipped in the moving object, for instructing to update the priority information stored in the priority storage. The priority updater updates the priority information based on the update instruction. The transmitter transmits the log to the server based on the priority indicated by the updated priority information.

Growing community of inventors

Kariya, Japan

Keigo Nagara