[deleted]
Assuming a threat actor has full physical control/unlocked bootloader etc on a pixel 6+ device, how advanced would they need to be in order to modify / inject malicious firmware/rootkit/malware into a pixel, that wouldn't be remedied by re-flashing the stock OS then GrapheneOS? Is this something that's publicly known to be done?
Context: Buying a used pixel 6+ and re-flashing stock OS then GrapheneOS to remove any potential persistent malicious firmware/rootkit/malware