Security Logic

This page provides insight into how the system defends against unauthorized CAN bus access.

Threat Model

• Attacker injects fake "unlock" messages via OBD-II or CAN wiring.
• Victim vehicle unlocks under assumption of keyless entry.

Defense Strategy

• Monitor for specific unlock CAN IDs (configurable).
• Automatically reply with a lock signal when unauthorized unlock is detected.
• Optional: delay between unlock and lock to avoid repeated override.

Limitations

• Cannot distinguish legitimate unlock from attacker without user presence detection.
• Assumes attacker does not simultaneously jam response signal.