Between 500 and 500 people living in Beta, MD and Start Hotels have been compromised. Marriott says that since 2014 it has not opened unauthorized access to its starwood network.
The company said that there are some guests' credit card numbers and expiration dates.
Information related to reservations in the Starshead on or before September 10 is a violation of the databases in September.
The motive has been detected by a quest that a man copied copied and hidden information has been detected and now it is working to remove the information.
The Marriot expands a website and call center. They think it's risky and will start sending email to those affected by Friday.