The data breach fine against Marriott by the Information Commissioner s Office comes a day after British Airways was also penalized. In November 2018, Marriott said that a massive data breach of its guest reservation system left up to 500 million guests data exposed and available for the taking, a number that was later corrected to 383 million records. Experts say the dual penalties signal that organizations are increasingly cracking down on company data security incidents under the umbrella of the General Data Protection Regulation (GDPR)
Source: https://threatpost.com/marriott-123m-fine-data-breach/146320/