Sensor data anomaly detector

Abstract

Methods and systems are provided that are effective to generate an alarm for a vehicle. The methods include receiving, by a device, a first sensor value from a first sensor for the vehicle. The methods further include receiving, by the device, a second sensor value from a second sensor for the vehicle. The methods further include retrieving, by the device, an instruction from a memory disposed in the vehicle while the memory is in a write-protected mode. The methods further include evaluating, by the device, the first sensor value and the second sensor value based on the instruction. The methods further include determining, by the device, that the first sensor value is outside a range associated with the first sensor based on the evaluation. The methods further include transforming, by the device, the determination into an alarm.

What is claimed is: 
     
         1 . A method to detect an attack on a vehicle, the method comprising:
 receiving a sensor value from a sensor associated with the vehicle;   in response to receiving the sensor value, generating sample data to be written onto a memory which is disposed in the vehicle;   attempting to write the generated sample data to the memory;   detecting an attack on the vehicle based on a determination that the attempt to write the generated sample data to the memory is unsuccessful; and   generating an alarm that is indicative of the detected attack on the vehicle.