You might be interested to read about the findings by Ruter, the publicly owned transport company for Oslo. They discovered their Chinese Yutong electric buses contained SIM cards, likely to allow the buses to receive OTA updates, but consequentially means they could be modified at any moment remotely. Thankfully they use physical SIMs, so some security hardening is possible.
Of course, with eSIMs becoming more widespread, it’s not inconceivable you could have a SoC containing a 5G modem with no real way to disable or remove it without destroying the device itself.
You might be interested to read about the findings by Ruter, the publicly owned transport company for Oslo. They discovered their Chinese Yutong electric buses contained SIM cards, likely to allow the buses to receive OTA updates, but consequentially means they could be modified at any moment remotely. Thankfully they use physical SIMs, so some security hardening is possible.
Of course, with eSIMs becoming more widespread, it’s not inconceivable you could have a SoC containing a 5G modem with no real way to disable or remove it without destroying the device itself.
[1] https://ruter.no/en/ruter-with-extensive-security-testing-of...