Misconfigured Vietnam-linked APIS database exposed 220 million traveler records
Security researchers at Kinryu Labs found an unsecured Elasticsearch cluster in Viettel-assigned IP space in Hanoi containing over 220 million passenger and crew records dating from 2017 to 2026. The exposed data included passport numbers, nationalities, dates of birth, flight details, seat assignments and baggage information, accessible due to a chain of misconfigurations and default credentials. The database was secured after being reported, though it remains unknown whether the data was accessed or copied before that point.