269K accounts from Kemper (kemper.com) were exposed in this breach. Besides email addresses, it included partial credit card data, which makes it a high-risk breach.
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Email addressesNamesPartial credit card dataPhone numbersPhysical addressesPurchases
In April 2026, the American insurance holding company Kemper Corporation was named by the ShinyHunters ransomware group in a "pay or leak" extortion campaign. The attackers allegedly accessed Kemper's Salesforce environment via social engineering as part of a broader campaign targeting hundreds of organisations using the same method. The group later published tens of gigabytes of data they claimed included internal directory data, Salesforce records and Stripe payment logs. Among the 269k unique email addresses were names, phone numbers, physical addresses and partial payment card data including the last 4 digits, expiry dates and card brands. Kemper confirmed the incident and stated they had engaged third-party cybersecurity experts and notified law enforcement.
Source: Have I Been Pwned (CC BY 4.0)