Marriott Says Up To 500 Million Customers’ Data Stolen In Breach

Marriott said that for 327 million guests of its Starwood network, which includes Westin hotels like this one near San Francisco, the compromised data includes dates of birth and passport numbers

Justin Sullivan / Getty Images

Updated at 4:15 p.m. ET

In one of the largest cybersecurity breaches in history, Marriott International said Friday that information on up to about 500 million of its customers worldwide was exposed in a breach of its Starwood guest reservation database dating as far back as 2014.

The world’s largest hotel chain said it learned of the breach on Sept. 8.