"...almost 6,000 internal Git repositories, including:

Entirety of twitch.tv, with commit history going back to its early beginnings Mobile, desktop and video game console Twitch clients Various proprietary SDKs and internal AWS services used by Twitch Every other property that Twitch owns including IGDB and CurseForge An unreleased Steam competitor from Amazon Game Studios Twitch SOC internal red teaming tools (lol)

AND: Creator payout reports from 2019 until now."

I don't really get the image it redirects to, but the website does have information on leaks.

https://sizeof.cat/post/twitch-leaks/