https://www.bleepingcomputer.com/news/security/marriott-confirms-data-breach-and-a-failed-extortion-attempt/

Hotel giant Marriott International confirmed it was hit by another data breach after an unknown threat actor breached one of its properties and stole 20GB of files.

The attackers could only breach one of the chain's properties, BWI Airport Marriott, and only had access to its network for a limited time.