Abstract: A frame determination device connected to a network that transmits a cycle frame and an event frame transmitted from an electronic control device is configured to receive a first data frame; calculate a reception interval between the first data frame and a second data frame; determine whether the first data frame is the cycle frame based on the reception interval; calculate a difference between a reception time of an N-th actual received frame and a predicted reception time of an N-th virtual received frame; determine whether the first data frame is an event frame or an abnormal frame different from the event frame; and an output unit that is configured to output a determination result of the first data frame.

Abstract: An abnormal frame determination device receives data frames which are transmitted by an electronic control unit at a predetermined period. A receipt interval between a first data frame and a second data frame is calculated. The second data frame is received immediately before receipt of the first data frame. A predetermined value is added to a determination value stored in a storage when the receipt interval is shorter than a threshold. It is determined that the second data frame is an abnormal frame when the determination value reaches a limit value and the receipt interval is longer than a proximity receipt interval that is a criterion for determining whether the first data frame and the second data frame are received in proximity to each other.

Abstract: A vehicle computer system includes one or more sensors configured to receive input regarding a vehicle's environment, and a controller in communication with the one or more sensors of the vehicle. The controller is configured to identify a cyber-attack on one or more vehicle controllers in the vehicle, and respond to the cyber-attack based upon at least the vehicle environment.

Abstract: A vehicle computer system includes one or more sensors configured to receive input regarding a vehicle's environment, and a controller in communication with the one or more sensors of the vehicle. The controller is configured to identify a cyber-attack on one or more vehicle controllers in the vehicle, and respond to the cyber-attack based upon at least the vehicle environment.

Abstract: System, methods, and other embodiments described herein relate to validating data arguments in a program. In one embodiment, a method includes, in response to an electronic request, identifying a data argument within a code segment of source code of the program. The data argument is non-control data passed between one or more functions of the program. The method includes storing data characteristics about the data argument within a control flow graph derived from the source code. The control flow graph represents execution paths within the program. The data characteristics indicate a state of the data argument and at least one relationship associated with the data argument. The method includes providing the control flow graph as an electronic output to facilitate adjustments in the source code.

Abstract: System, methods, and other embodiments described herein relate to validating data arguments in a program. In one embodiment, a method includes, in response to an electronic request, identifying a data argument within a code segment of source code of the program. The data argument is non-control data passed between one or more functions of the program. The method includes storing data characteristics about the data argument within a control flow graph derived from the source code. The control flow graph represents execution paths within the program. The data characteristics indicate a state of the data argument and at least one relationship associated with the data argument. The method includes providing the control flow graph as an electronic output to facilitate adjustments in the source code.