![]() ![]() The researchers' own device was an Arduino mini-computer with wires running into the OBD port of (in a nod to their Milanese heritage) an Alfa Romeo Giulietta hatchback. In most cases, an attacker would need physical access to a car's OBD port, and a specially crafted device plugged into the port, to affect the car's CAN bus. Getting up close helps, but isn't necessary If your engine shuts off when you're stopped at a traffic light, or the doors lock when the engine starts, that's the CAN bus at work. In newer cars, CAN lets these various systems communicate. ![]() In older cars, it's up to the driver to coordinate the brakes, engine, steering and transmission. The CAN protocol makes sure that computerized auto parts - technically known as electronic control units (ECUs) - made by many different manufacturers can "talk" to each other over the car's internal network, or "bus." CAN was developed in the mid-1980s, debuted on high-end BMWs in 1988, was standardized in 1993 and is now used on almost all cars worldwide. ![]()
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