30.5K accounts from Light's Hope (lightshope.org) were exposed in this breach. Besides email addresses, it included passwords, which makes it a high-risk breach.
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Dates of birthEmail addressesGeographic locationsIP addressesPasswordsPrivate messagesUsernames
In June 2018, the World of Warcraft service Light's Hope suffered a data breach which they subsequently self-submitted to HIBP. Over 30K unique users were impacted and their exposed data included email addresses, dates of birth, private messages and passwords stored as bcrypt hashes.
Source: Have I Been Pwned (CC BY 4.0)