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high severity April 18, 2026 · 7.5M affected

Carnival Data Breach (2026)

In April 2026, the notorious hacking collective ShinyHunters claimed they had obtained a substantial volume of data belonging to the Carnival cruise operator and attempted to extort the organisation to prevent the data from being leaked. The following week, the group published the data publicly, which contained 8.7M records with 7.5M unique email addresses. The data contained fields indicating it related to the Mariner Society loyalty program run by Holland America, a cruise line brand under Carnival, and included names, dates of birth, genders and data relating to status within the loyalty pr

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Severity High
Disclosed April 18, 2026
Affected 7.5M
Data exposed Dates of birthEmail addressesGendersGeographic locationsLoyalty program detailsNamesSalutations
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