If you glitch one, can you glitch many?
Extracting automotive firmware is a challenge.
@Phil_BARR3TT explains how he bypassed the IDCODE protection in several variants of the RH850 MCU family using both voltage glitching and side-channel analysis ⚡️🚗

https://blog.quarkslab.com/bypassing-debug-password-protection-on-the-rh850-family-using-fault-injection.html