Car Remote Security Vulnerabilities and Latest Hacking Cases

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As smart key systems become more widespread, the security vulnerabilities of car remotes can no longer be ignored. This post systematically explains key hacking methods, real-world cases, and prevention strategies you should know.

Two people using relay devices to hijack smart key signal near a vehicle

1. Types of Car Remote Security Vulnerabilities

  • Relay Attack: Hijacking the signal to make the car believe the key is nearby
  • RollJam Attack: Disrupting rolling codes to reuse previously captured codes
  • Fixed Code Replay: Replicating a static code captured from older remotes
  • CAN Bus Attack: Exploiting internal vehicle network vulnerabilities through OBD-II port

2. Recent Hacking Cases

  • London, UK (2020): Hundreds of BMW and Mercedes vehicles stolen via relay attacks
  • Munich, Germany (2021): Luxury SUVs hijacked using RollJam during the night
  • Seoul, Korea (2022): Relay attacks suspected in valet garages of high-end Hyundai and Kia models
  • USA (2023): Smart key cloning kits openly sold on black markets and online forums

3. Protection Strategies

Against Relay Attacks
Use a Faraday pouch or disable passive entry features in car settings.

Prevent RollJam & Replay
Activate smart key power-saving mode and apply security firmware updates.

Block CAN Bus Access
Install OBD-II port covers and restrict third-party Bluetooth diagnostic tools.

4. Smart Habits for Key Security

  • Store smart keys in signal-blocking wallets or aluminum foil when at home
  • Never leave your key near front doors or windows overnight
  • Always re-register smart keys when purchasing used cars
  • Check regularly for security or firmware updates for your car

5. Future Trends in Vehicle Key Security

Modern cars are transitioning to digital keys using NFC, BLE, and UWB technologies. These systems are far more resistant to relay attacks and include spatial verification. Biometric authentication methods like Face ID and fingerprint sensors are also emerging.

Conclusion

Car remotes are convenient but inherently vulnerable to various forms of hacking. Understanding and addressing risks like relay attacks, RollJam, replay hacks, and CAN exploits can help you stay ahead of theft and maintain your vehicle’s security. A few simple habits and tech upgrades can make a huge difference.