Marriott International Data Breach
In November 2018, multinational hospitality giant Marriott International announced a massive data breach involving the guest reservation database of its Starwood hotel brand, which it had acquired in 2016.
Exposed Data Types
8- Names
- Postal addresses
- Phone numbers
- Email addresses
- Passport numbers
- Loyalty program details
- Reservation and travel information
- Payment card information
About This Breach
Ongoing undetected since 2014, the state-sponsored cyber intrusion compromised the personal records of approximately 383 million unique guests. Exposed data included full names, mailing addresses, phone numbers, email addresses, over 5 million unencrypted passport numbers, Starwood Preferred Guest loyalty account information, and travel arrival/departure dates, resulting in an £18.4 million regulatory fine by the UK Information Commissioner's Office (ICO).
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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