A good start, though once someone has physical access to the OBD port, all bets might be off: https://www.extremetech.com/extreme/132526-hack-the-diagnostics-co

A good start, though once someone has physical access to the OBD port, all bets might be off: https://www.extremetech.com/extreme/132526-hack-the-diagnostics-connector-steal-yourself-a-bmw-in-3-minutes https://www.extremetech.com/extreme/132526-hack-the-diagnost...