Incident Overview

A well-known threat actor going by 888 is selling the database of DinerEnBlanc.com, the platform behind the internationally recognized Diner en Blanc pop-up dining event. Originating in Paris in 1988, Diner en Blanc ("Dinner in White") is a worldwide phenomenon held in over 80 cities across six continents, where thousands of guests dressed in white gather at secret locations for an open-air dinner. The database contains 411,000 unique user records and is being offered as a one-time exclusive sale for Monero only.

The breach exposes two distinct datasets. The primary event management database contains the following fields per record:

• Personal Identity: IDs, first names, last names, and email addresses.
• Event Logistics: Phase assignments, role designations, invite codes, transportation method, group assignments, and table numbers. These fields reveal the detailed organizational structure of how each event is planned and managed.
• Attendance Status: VIF (VIP) status flags, new attendee markers, absent flags, incomplete registration markers, personal invitation status, blacklisted flags, cancelled flags, confirmed flags, confirmation status, and reserved status.
• Social Connections: Partner IDs linking guests to their dining partners, revealing personal relationship data.

A separate newsletter/mailing list dataset includes email addresses, first names, last names, subscription tags, subscribed/unsubscribed timestamps, and extra attributes.

The value of this data goes beyond typical PII. Diner en Blanc is an invitation-only, culturally exclusive event that attracts affluent, socially connected individuals in major global cities. The guest list effectively functions as a curated directory of high-net-worth and socially prominent individuals across 80+ cities worldwide. The VIF/VIP flags, blacklist status, and invite code structures reveal the internal social hierarchy of the event organization. For social engineers, this is a high-quality targeting list of wealthy individuals with verified social connections, event preferences, and transportation patterns.