MGM Resorts

In July 2019, MGM Resorts discovered a data breach of one of their cloud services . The breach included 10.6M guest records with 3.1M unique email addresses stemming back to 2017. In May 2022, a superset of the data totalling almost 25M unique email addresses across 142M rows was extensively shared on Telegram . On analysis, it's highly likely the data stems from the same incident with 142M records having been discovered for sale on a dark web marketplace in mid-2020 . The exposed data included email and physical addresses, names, phone numbers and dates of birth.