Carnival data breach hits Holland America loyalty programme
SpilloverSpillover from the Carnival incident · View original incident →A data breach at Carnival Corporation also affected Mariner Society, the loyalty programme of Holland America Line. The specific extent of the damage, the data leaked, the date of the incident and the response have not been confirmed.
Key facts
- Affected organisation
- Holland America Line
- Original incident
- Carnival staff account takeover exposes data of around 5.99 million people
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Not confirmed
- Cause / method
- Not confirmed
- Location
- United States
If your data was exposed
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- It came to light that Holland America Line's Mariner Society had been affected by the Carnival Corporation data breach.
Original incident
This is spillover from the Carnival incident.
Carnival staff account takeover exposes data of around 5.99 million people
6mImpact: Personal data of around 5.99 million people
A social engineering attack targeting employee accounts at cruise operator Carnival led to the leak of personal data of around 5.99 million travellers. Carnival disclosed the data breach in May 2026. A class action was filed over delays in notifying customers, and Texas authorities opened an investigation into the incident, which affected more than 800,000 residents.
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1 related reports
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.