> The problem we have right now is that there are some legitimately interesting ideas out there for things we could be using LLMs for, but we also have a ton of "I have a hammer, and everything looks like a nail" going on too.

It's not a problem as much as a phase the world is going through. LLMs are a technological breakthrough in the same generality class as the Internet, or possibly electricity, and in both cases the world went through a phase of attempting to apply the newfound invention to literally everything. It's a necessary phase, when a technology obviously could be useful for everything, but it's not obvious whether it will in practice.

I don't think Google are advocating for removing the deterministic controls, are they?

Sounds like adding the LLM in would be on top of the existing deterministic controls.

Existing controls handle the "Should you be able to access this resource right now?" the LLM handles "Is this user behaving as we expect them to while accessing this resource?"

Agreed; I don't think we want security controls to devolve into an argument between LLMs. Attacking and defending LLMs operate in an ecosystem, and are (hopefully) limited by constraints. Defending LLMs will be able to rely on and evolve those constraints. Attacking LLMs want to find a way around them.

Who said anything about an LLM doing it? Credit card companies have been using AI quite well for fraud detection for years before LLMs were released to the public.