NH NongHyup Travel security incident history
Hacking, data breaches and other security incidents involving NH NongHyup Travel, with related coverage.
Incidents: 1 · Most recent
Signs of customer flight booking number leak found at NH NongHyup Travel
↳ Knock-on damage from the Amadeus incident · View original incidentEvidence indicated that some NH NongHyup Travel customers' flight booking numbers were leaked through unauthorized access to the Amadeus system using authentication credentials. The incident is estimated to have occurred between August 2023 and September 2026. NH NongHyup Travel posted a notice on November 4, 2026, and is investigating which customers' data was actually leaked, what additional data was exposed, and the extent of the impact.
Related reports: 3 · last report →