Marriott International said on Friday hackers stole about 500 million records from its Starwood Hotels reservation system in an attack that began four years ago, exposing personal data of customers including some payment card numbers.
Shares of the company were down 4 percent at $117 in premarket trading.
The hack began in 2014, before Marriott offered to buy Starwood for $12.2 billion in November 2015, acquiring brands including Sheraton, Ritz Carlton and the Autograph Collection to create the world’s largest hotel operator. The company closed the Starwood deal in September 2016.
Marriott said for 327 million guests, compromised data could include passport details, phone numbers and email addresses. For some others, it could include credit card information.
Marriott said it first found out about the breach after an internal security tool sent an alert on Sept. 8.
“We’ve opened an investigation into the Marriott data breach. Additionally, under New York Continue reading