It’s a good thing cars can’t experience emotions or one specific 2014 Jeep Cherokee would be terrified every time security pros Charlie Miller and Chris Valasek come near it. That’s the vehicle they remotely hacked in 2015; now they used the Jeep to show how an attacker can control the steering, accelerator and brakes while the Jeep is driving at high speeds.

Granted, this time they were in the vehicle with a laptop physically connected to the CAN network via the diagnostic port. They reverse-engineered the ECU (electronic control unit) firmware, basically knocking it offline, so they could send fake CAN messages to tell the car what to do such as slam on the brakes or jerk the steering wheel or hit the gas.

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