

I’m a security engineer, and encryption is great, but can be bypassed. Relying on encryption assumes it was implemented properly, that the system was shut down properly so all keys were flushed correctly, and the encryption algorithm doesn’t have weaknesses.
Generally if somebody dedicated enough can acquire physical access to a system, they can probably find a way into it given the right resources. Did that happen here? Probably not. Could it have? Absolutely. That’s why most enterprises or government hard drives are shredded rather than just relying on them being wiped or encrypted.
Encryption is part of the solution, but it’s not automatically the complete solution.
Waymo can absolutely drive at night, I’ve seen them do it. They rely heavily on LIDAR, so the time of day makes no difference to them.
And apparently they only disengage and need human assistance every 17,000 miles, on average. Contrast that to something like Tesla’s “Full Self Driving” (ignoring the controversy over whether it counts or not), where the most generous numbers I could find for it are a disengagement every 71 city miles, on average, or every 245 city miles for a “critical disengagement.”
You are correct in that Waymo is heavily geofenced, and that’s pretty annoying sometimes. I tried to ride one in Phoenix last year, but couldn’t get it to pick me up from the park I was visiting because I was just on the edge of their area. I suspect they would likely do fine if they went outside of their zones, but they really want to make sure they’re going to be successful so they’re deliberately slow-rolling where the service is available.