Security News Hackers can now track your car's location through tire pressure sensors

Gandalf_The_Grey

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Recent security incidents have proven that internet-connected cars can be tracked and even hijacked by hacking their advanced infotainment systems, wireless keys, and the cloud servers of their manufacturers. However, researchers have also discovered serious vulnerabilities in an overlooked area: the systems that electronically monitor tire pressure can leak location data.

The device in many automobiles that warns drivers when their tire pressure is low transmits the data in unencrypted cleartext and carries a unique identifier for each vehicle. Researchers from IMEDA Networks and several European universities recently discovered that relatively inexpensive wireless devices can track Tire Pressure Monitoring System (TPMS) signals to spy on drivers covertly over extended periods.

Major automakers, including Toyota, Renault, Hyundai, and Mercedes, favor Direct TPMS (dTPMS) devices – battery-powered pressure sensors embedded within wheel rims or tire liners. In contrast with Indirect TPMS, which simply calculates wheel pressure via speed sensors, dTPMS directly transmits tire pressure and temperature information to a vehicle's electronic control unit (ECU) in packets of around 100 bits.

The researchers found that portable devices costing as little as $100 can detect the packets from over 50 meters away. Determined hackers could assemble them using off-the-shelf antennas and Raspberry Pi components, then covertly place them along roads to harvest signals from passing vehicles.
 
My wife just bought a Renault Capture Apline Esprit hybrid and it also has tire pressure sensors. I will tell her she is in danger (soon everyone will know where she is driving around). Just kidding. These vulnerabilities are valid and bad design, but what practical value does this data has?

PS @Andy Ful already knows a lot of my wife's laptop. What is worst the PC or the car, should I worry? ;)
 
Modern cars are considered a privacy disaster without villains scanning your tires with poor security from up to roughly half a city block away. It's easier to think about your app choices and activities on a PC, but car manufacturers evidently love how much information flows through today's cars so they can cash in on it. No informed consent.

In 2025, the FTC finally clamped down on General Motors for sharing precise location and behavior data without proper consent, banning certain disclosures for five years.



 
Might be a good thing if you knew my wife was driving along, maybe this could be integrated as a red warning triangle flashing on smart cars, I warn people if she is around our town :p:p
 
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