56K accounts from Kaspersky Club (kasperskyclub.ru) were exposed in this breach. Besides email addresses, it included passwords, which makes it a high-risk breach.
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Email addressesIP addressesPasswordsUsernames
In March 2024, the independent fan forum Kaspersky Club suffered a data breach. The incident exposed 56k unique email addresses alongside usernames, IP addresses and passwords stored as either MD5 or bcrypt hashes.
Source: Have I Been Pwned (CC BY 4.0)