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Data Breach Exposes Personal Information of South Korean President and Staff

Data Breach Exposes Personal Information of South Korean President and Staff

First seen 2 Nov 2026, 16:14 UTC • •
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ThreatCluster AI
ThreatCluster •November 2, 2026 at 19:47 UTC
  • •Personal data of 168 individuals, including President Lee, was leaked online.
  • •The breach involved an Excel file posted on a paid security platform for five months.
  • •The presidential office has initiated an investigation and response measures.

A data breach has revealed the personal information of South Korean President Lee Jae Myung and 167 others, including his wife and staff, after an Excel file titled 'Passenger List (Republic of Korea–Belgium)' was posted on a paid security platform. The file, available for download since June 2, contained sensitive data such as passport numbers, dates of birth, and affiliations. The breach was disclosed by KBS, prompting the presidential office to announce an investigation and response measures. The Ministry of Foreign Affairs is also involved in addressing the situation. This incident raises concerns about the cybersecurity measures in place for high-profile individuals in South Korea, despite the country's advanced technological infrastructure.

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Timeline

2026-06-02
Passenger list posted online
An Excel file containing personal information of passengers on the presidential plane was made available for download on a paid site.
Biz.Chosun
2026-11-02
Breach disclosed by KBS
KBS reported that the personal information of President Lee and others had been accessible online for five months.
Bluewin.Ch
2026-11-02
Presidential office announces investigation
The South Korean presidential office confirmed it is investigating the data breach and taking response measures.
Feed.Koreatimes.Co.Kr

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Common questions

What personal information was leaked?
The leaked data included passport numbers, dates of birth, and affiliations of 168 individuals, including the president and his staff.
How long was the data exposed?
The personal information was reportedly accessible online for five months before being disclosed.
What actions are being taken in response?
The presidential office has initiated an investigation and is coordinating with the Ministry of Foreign Affairs for further measures.