This could all go multiple ways but one of them is we end up in a place where technical security is just not possible to implement any more. What does that world look like?

Presumably it means much more behavioral security and inherent friction built in to everything we do. Maybe high value transactions will just inherently have to take multiple days to do, just to slow down things enough that human reaction time can equal what LLMs can execute?

On the technical side, I can see zero trust becoming completely saturated through every layer. The passkey you authenticate with isn't opening a gate to a trusted tier within which components trust each other - even within the same software component. Every internal function call at every layer doing hardware signature verification against continuously minted private keys (since we assume exposure, the lifetime can't be longer than milliseconds now).

It's really interesting to think through what a fundamentally robust security environent does look like if you bake in an assumption that technical security is impossible.