(AP) — The information of as many as 500 million people staying at Starwood hotels has been compromised and Marriott says it’s uncovered unauthorized access that’s been taking place within its Starwood network since 2014. (AP) — The Latest on a security breach inside Marriott's worldwide hotel empire that has compromised the information of as many as 500 million guests (all times local):

Security experts say a data breach that affected up to 500 million guests at Marriott hotels is one of the largest in the past decade in terms of size and scope. The company said hat it obtained and decrypted the database on November 19 and “determined that the contents were from the Starwood guest reservation database.”

Some 327 million records contained a guest’s name, postal address, phone number, date of birth, gender, email address, passport number, Starwood’s rewards information (including points and balance), arrival and departure information, reservation date, and their communication preferences. The hotel said that the database also contained encrypted credit card numbers for some customers and that it can’t rule out that the hackers stole information that could decrypt and reveal those numbers. Starwood operates hotels under the names: W Hotels, St. Regis, Sheraton Hotels & Resorts, Westin Hotels & Resorts, Element Hotels, Aloft Hotels, The Luxury Collection, Tribute Portfolio, Le Méridien Hotels & Resorts, Four Points by Sheraton and Design Hotels. Guests should also check their bank, retirement, and brokerage accounts, as well as credit card statements to look for any unauthorized transactions.
Marriott International discloses that its Starwood Hotel brand had been subject to a data breach.