BETHESDA, Md. – Information on as many as 500 million people staying at Starwood hotels has been compromised and Marriott said it found unauthorized access that has occurred within Starwood's network since 2014.
The company said Friday that the credit card number and expiration date of some guests might have been taken.
Marriott said that there was a database violation in September, which had guest information regarding reservations at Starwood properties on or before September 10.
Marriott found out through an investigation that someone copied and encrypted guest information, and said it was now trying to delete information.
Marriott has set up a website and call center for anyone who thinks they are at risk, and on Friday will start sending emails to those affected.