AI-Powered Hotel Check-In System Exposes Over a Million Guest IDs in Japan
Date: 2026-05-15
Attack vector: other
Category: real-world
Severity: High

Tracked by the OECD AI Incidents and Hazards Monitor (AIM) as OECD-AIM-2026-05-15-45f7, dated 2026-05-15. See the AIM incident page (https://oecd.ai/en/incidents/2026-05-15-45f7) and its cited news sources for full narrative detail.


Mitigations:

Architectural layers (MAESTRO):