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Korean Air has confirmed a leak of customer personal information, including reservation numbers, after a hacking incident at a partner company, according to Hankyoreh and Korea Economic Daily reports. The airline attributed the breach to "협력사 해킹 피해" (partner company hacking damage). The exact number of affected customers and the timeline of the leak have not been disclosed in the reports. Korean media are covering the incident as a data security breach affecting airline passengers, though no specific customer reactions from blogs or cafés are included in the available coverage.