BETHESDA, Md. – The information of as many as 500 million people staying at Starwood Hotel has been compromised and Marriott says it has revealed unauthorized access that has been taking place in its Starwood network since 2014 .
The company said on Friday that the number of credit card and closing dates for some guests could be taken.
Marriott said there was a breakdown of a database in September, and hotel information was related to suspicions in Starwood's property on or before September 10.
Marriott discovered by the investigation that someone copied and encrypted guest information, and says that he is now working towards removing the information.
Marriott has set up a website and a call center for anyone who believes they are at risk, and on Friday they will start sending emails to those that are affected.