Game-streaming platform Twitch on Wednesday confirmed a data breach which reportedly divulged confidential company information and streamers’ earnings.

In a statement, the company said 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.”

More than 100GB of data was posted online on Wednesday. The documents seem to show Twitch’s top streamers each made millions of dollars from the Amazon-owned company in the past two years.

According to Twitch, its teams are working with “urgency” to investigate the incident.