Travel Marriott says as many as 500 million Starwood guests’ data may have been breached November 30, 2018November 30, 2018Mike Snider, USA TODAYComments Off on Marriott says as many as 500 million Starwood guests’ data may have been breached Marriott says a data breach allowed access to a database of information on as many as 500 million customers who have stayed at a Starwood property.