casperfun wrote: ↑Thu Dec 10, 2020 5:39 pm
Now you have to worry about some computer geek hacking to steal or control you're car.
Nissan actually did something very smart regarding the hacking issue. The BCM's have always been non-programmable via the CANbus, but that's mostly protection against theft. The big danger from hacking has always been the radio / AV Unit, since it's the one device that
must connect directly to the outside world. So there's always been a danger of a hacker hijacking the radio via USB or bluetooth and having it mimic instructions from the engine, ABS, and other critical systems. This has become more crucial with every year, since any car that can start, stop, steer and "see" the road, can certainly drive itself off a cliff if instructed to. Recent Nissan models all have what are called "CAN hubs", which are basically supervisors that connect multiple CAN buses together. The one that connects the AV Unit to the rest of the car now has a strict list of valid messages that the AV can send, and if anyone hijacks the AV, they'll discover a "hard-programmed" firewall that won't let through the slightest junk. Very well thought-out and very effective!