Marriott: Breach Involved 5.25M Unencrypted Passport Numbers

Jan 08, 2019

The Marriott International hotel chain said approximately 5.25 million unencrypted passport numbers were included in the information accessed by an unauthorized third party in the incident reported Nov. 30 involving its Starwood reservations database.

It also said approximately 8.6 million encrypted payment cards were involved in the incident, though it reduced its estimate of the number of potentially affected guests from 500 million to no more than 383 million.