In October 2014, the (now defunct) Belgian gaming news forum 9Lives suffered a data breach that was later redistributed as part of a larger corpus of data. The breach exposed 109k unique email addresses along with usernames and salted MD5 password hashes. The data was provided to HIBP by a source who requested it be attributed to "Leidhall".
Source: HaveIBeenpwned
Source Link: https://haveibeenpwned.com/PwnedWebsites#9Lives