Vehicle Network Communication Restriction for Security Anomalies
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Solution Overview
Problem
Conventional vehicle control systems face risks of unauthorized access and tampering, which can compromise the security of communication between in-vehicle networks and external devices, particularly in cases of physical modification or unauthorized access to telematics control units.
Innovation Solution
A vehicle control system with an anomaly detector that identifies security anomalies in the in-vehicle network, temporarily raising the security level by restricting communication with external devices, filtering specific information, and potentially rendering the vehicle undrivable to prevent unauthorized data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If communication between the communicator and external device is maintained continuously, then data transmission efficiency is improved, but security risk increases when unauthorized access is detected
Solution Approach 1:
The communication restriction mechanism dynamically adjusts the communication state between the communicator and external device based on security anomaly detection results. When a security anomaly is detected, the controller restricts communication; when no anomaly is detected, communication is maintained. This dynamic adjustment resolves the contradiction by adapting communication status to real-time security conditions.
Solution Approach 2:
The controller acts as an intermediary between the communicator and the external device, mediating communication based on security anomaly detection. The controller receives anomaly detection results from the anomaly detector and decides whether to allow or restrict communication, thereby protecting the system from security risks while maintaining normal communication functionality.
2Reliability
If security checks are performed continuously, then security detection capability is improved, but system processing load increases
Solution Approach 1:
The anomaly detector provides feedback to the controller about security anomalies in the in-vehicle network. This feedback mechanism enables the system to maintain high security detection capability by only performing detailed security checks when anomalies are detected, rather than continuously monitoring all communications, thereby reducing overall system processing load.
3Object-affected harmful factors
If communication is restricted when anomaly is detected, then security is improved, but communication availability decreases
Solution Approach 1:
The communication restriction is dynamically applied only when security anomalies are detected, rather than being a permanent state. This allows the system to maintain high communication availability during normal operation while providing strong security protection when needed, resolving the contradiction between security and communication availability.
Data Source
AI summary
A vehicle control system includes: an obtainer that obtains vehicle information on a vehicle from an in-vehicle network; a communicator that is capable of communicating with an external device via an external network and transmits the vehicle information obtained by the obtainer to the external device via the external network; an anomaly detector that detects a security anomaly in the in-vehicle network; and a controller that restricts communication between the communicator and the external device when the security anomaly is detected by the anomaly detector.