Twitch says a sever configuration change left data exposed on the internet and let a third-party access its data (Twitch Blog)

Twitch Blog:
Twitch says a sever configuration change left data exposed on the internet and let a third-party access its data — [10:30PM PT] We have learned that some data was exposed to the internet due to an error in a Twitch server configuration change that was subsequently accessed by a malicious third party.