jeffwMay 23, 2024

Teslas Can Still Be Stolen With a Cheap Radio Hack—Despite New Keyless Tech

https://lemmy.world/post/15703214

Teslas Can Still Be Stolen With a Cheap Radio Hack—Despite New Keyless Tech - Lemmy.World

Show threadAurenkinMay 23, 2024
If you have a Tesla and you’re worried about this it’s probably worth enabling pin to drive. Not sure about all the other brands that are impacted but hopefully they have a similar feature.
Show threadpartial_accumenMay 23, 2024

Couldn’t a Model 3/Y owner also just disable the phonekey and use the NFC cards? NFC only broadcasts a few inches right? I would think that would be VERY hard for a malicious actor to capture with relay/replay attack.

Following that, is it possible to use the Phonekey only in NFC mode or is it always broadcasting on Bluetooth LE and NFC?

Show threaddigdug

I just tried this a couple different ways:

  • Removing permission for "nearby devices" - this unfortunately appears to block both Bluetooth and NFC permission
  • Turning off the phone's Bluetooth - NFC still works while the Bluetooth radio is off, but unless you remember to do this before you get near your car every single time, then you'd potentially be at risk. Setting a PIN would still be more secure.
    • May 23, 2024 at 6:18amWeb
    Show threadpartial_accumenMay 23, 2024

    So we’d need Tesla to push a software change in the app with an option to turn off the Bluetooth LE signal, but leave the NFC on to continue to use Phonekey safely.

    I guess the only safe alternative is using the NFC cards.