Marriott Says Hackers Swiped Millions of Passport Numbers

Hotel chain says fewer total customers were affected than initially feared but analysts warn data could be intelligence trove

Marriott International Inc. said fewer customers were affected in a massive data breach than initially feared but confirmed that hackers had compromised the passport numbers of millions of people in what security analysts have described as a potential foreign-intelligence gold mine.

Marriott, the world’s largest hotel company, disclosed in November that a hack in the reservation database for its Starwood properties may have exposed the personal information of up to 500 million guests.

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