In September 2022, the in-game trading marketplace Traderie suffered a data breach that exposed almost 400k records (this preceded a subsequent breach the following year). The incident exposed email and IP addresses, usernames and links to social media profiles. The data was provided to HIBP by a source who requested it be attributed to "oathnet.ru".
Source: HaveIBeenpwned
Source Link: https://haveibeenpwned.com/PwnedWebsites#Traderie