https://www.cnbc.com/2018/11/30/marriott-says-its-starwood-database-was-breached-onapproximately-500-million-guests-.html

Marriott International said on Friday that hackers illegally accessed its Starwood Hotels brand's reservation database since 2014, potentially exposing personal information on about 500 million guests.

Shares of the company fell nearly 6 percent to about $115 in trading before the bell.