Why WPA3 Won't Do PPSK (yet) | PRG 26

I want to talk about a trick most of us use without thinking about it (I was guilty as well). A hundred users on one SSID, each with their own password, and the AP never asks for a username, so how does it know which key you typed?

That's PPSK, and it's exactly the thing WPA3 quietly breaks. I'll walk through it with live packet captures from my own lab.

How WPA2 leaks just enough to make PPSK work, why WPA3's SAE makes it impossible, and what each vendor workaround really costs you. PPSK is a WPA2-era artifact, and I want to show you why