110M accounts from Data Troll Stealer Logs were exposed in this breach. Besides email addresses, it included passwords, which makes it a high-risk breach.
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Email addressesPasswords
In June 2025, headlines erupted over a "16 billion password" breach. In reality, the dataset was a compilation of publicly accessible stealer logs, mostly repurposed from older leaks, with only a small portion of genuinely new material. HIBP received 2.7B rows containing 109M unique email addresses, which was subsequently added to the service under the name "Data Troll". The websites the stealer logs were captured against are searchable via the HIBP dashboard.
Source: Have I Been Pwned (CC BY 4.0)