The chain of hotels in Mariotte on Friday said the information to 500 million users can be compromised because of hacking the Starwood backup database.
During a recent investigation into a "Incident of data security", Mariot discovered "there was unauthorized access to Starwood's network in 2014," the network statement said.
Mariot said in a statement that on September 8, 2018 she received a signal about attempting to access a large US reservation base, and the investigation found that "unauthorized third party" was "copied and encrypted information, and carried out operations to eliminate them. "
The hotel company said it had not finished identifying information that was duplicated.
He noted that about 327 million out of about 500 million customers who would be involved in the affected database, information that could be compromised include names, postal and e-mail addresses, phone and pass numbers, date of birth, gender and including Starwood Preferred Guest (SPG) account details, a high card recently issued by American Express (AmEx) credit card for regular travelers.
For the rest, the information includes only the name and, in some cases, other details, such as e-mail and postal addresses.
Mariot created a website (info.starwoodhotels.com) and a hub for calls for information to customers, and plans to send emails to those affected by Friday, he added.
In addition, it offers a free subscription for WebWatcher, a service that oversees the Internet to verify whether the client's personal data is being used.
Starwood Hotel's portfolio includes W Sheraton Hotels, Resorts and Resorts, Hotels and Resorts in Westin, Hotels and Resorts of Le Meriden, Four Points by Sheraton and Design Hotels.