NH NongHyup Travel security incident history
Hacking, data breaches and other security incidents involving NH NongHyup Travel, with related coverage.
Incidents: 1 · Most recent
Evidence of customer flight booking number leak at NH NongHyup Travel
↳ Knock-on damage from the Amadeus incident · View original incidentEvidence indicated that some NH NongHyup Travel customers' flight booking numbers had been leaked through unauthorised access to the Amadeus system using authentication credentials. The incident is estimated to have occurred between August 2023 and September 2026. NH NongHyup Travel published a notice on 4 November 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 →