I think the main thing would be consciously correcting for that: the real value is asking about design decisions — it's my favorite technique — and just making sure that it's fully normalized that not everyone has those out in the open.

It's still easy to spot the liars — e.g. I've interviewed people who worked at the NSA and even they could talk about the skills they used, just not which projects or data — and the process of deciding which things to talk about is a pretty good way to explore their communications style, too.