This Feb. 1, 2010, file photo, shows the Westin Philadelphia hotel in Philadelphia. The information of as many as 500 million guests at Starwood hotels has been compromised and Marriott said that it’s discovered that unauthorized access to data within its Starwood network has been taking place since 2014. The company said Friday, Nov. 30, 2018, that credit card numbers and expiration dates of some guests may have been taken. (AP Photo/Matt Rourke, File)
BETHESDA, Md. — A security breach inside Marriott’s worldwide hotel empire has compromised the information of as many as 500 million guests, exposing in some cases credit card numbers, passport numbers and birthdates, the company said Friday.