Currency disappeared overnight

I got a unique ring last night, sold it for 8 div almost immediately. Sold 2 div, 1 for chaos, 1 for exalts, to have around 30 chaos, 100+ exalts, 6 div.

I spent some exalts on a new mace last night, so I should have around 30 chaos, 40 exalts, 6 div.

Logged in this morning and I have absolutely no currency in my stash. It's all gone. I'm playing through Steam, so I don't know how someone could've logged into my account?

I sold a Snakepit Pearl Ring last night for 8 Div, it shows up in my Sales History. Is there a trade history anywhere? Or anything I can do to try and figure out what just happened?

It's my ASSUMPTION, that they were able to login via my PoE forum account to the standalone client for PoE 2, and then just traded my stuff to their own account that way?

I've never logged in to the PoE website via email before. I've always used the Steam login option. So either that token is vulnerable, which means Steam is vulnerable, or there's no email verification when logging in with a login method that hasn't been used in a decade.

I really just want some answers on who has logged into my account and where overnight today.