INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Lee Kwang-hee Calls for Emergency Response to Leaked Personal Info

| 2026-10-18 14:13 HIGH LOW DATA BREACH
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Executive Summary
AI-generated
A massive data breach occurred from June 28 to 29, 2024, when a security vulnerability in the 'ttaengni' server was exploited by unauthorized access, resulting in the leak of approximately 4,620,000 people's personal information. The Seoul City Infrastructure Corporation and its response process have been criticized in a national inquiry, with Democrat Party of Korea Representative Lee Kwang-hee questioning personnel changes and compensation issues after a month had passed since the incident occurred on July 18, 2024. As of September 17, no disciplinary actions against those responsible for the incident or the information protection officer were confirmed, raising questions about accountability and management responsibilities within the Seoul Metropolitan Government.
Technical Mitigations AI-generated
• Patch the 'ttaengni' server to fix the security vulnerability that was exploited by unauthorized access. • Detect and investigate suspicious activity related to the leaked personal information, such as unusual login attempts or changes in system behavior. • Block IP addresses known to be associated with the leak, using techniques like IP blocking or rate limiting.
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Target & Sectors
Global Scope
Incident Timeline
‎July 18, 2024
He also questioned the management and supervision responsibilities of the Seoul Metropolitan Government.
organisation the Seoul Metropolitan Office of Education
Seoul Mayor Oh Se-hoon stated that the Seoul Metropolitan Office of Education Director-General was informed of the incident just one day after it was discovered, and that the incident was publicly disclosed immediately after, followed by a request for an investigation.
organisation the Seoul Metropolitan Office of Education's
The use rate of the Seoul Metropolitan Office of Education's "Ttaelneungi" coupon, which was provided to the individual who suffered the personal information leak, is 0.38%.
organisation the Korea Energy Seoul Infrastructure Corporation
The chairman of the Korea Energy Seoul Infrastructure Corporation stated that he acknowledges the responsibility for the personal information leak incident, explaining that the corporation has joined a personal information damage liability insurance.
victims 23 victims
The legislator mentioned that the individual has filed a lawsuit seeking compensation of 300,000 won per person for the 23 victims of the personal information leak, and inquired about the issues of liability for damages and securing funds in the future.
‎January 27, 2026
The Seoul City Infrastructure Corporation received a notification of suspected leakage from the police on January 27, 2026.
organisation The Seoul City Infrastructure Corporation
The Seoul City Infrastructure Corporation received a notification of suspected leakage from the police on January 27, 2026, and disclosed related facts on the 30th of the same month.
‎September 17
Threat actors leaked the personal information of 4,620,000 people.
general_metric 0 incidents
As of September 17, the legislator confirmed that there were no disciplinary actions against the information protection officer, with a total of 0 incidents.
‎October 15
Representative Lee Kwang-hee of the Democrat Party questioned Seoul City Infrastructure Corporation's response process, personnel changes, and compensation issues in a legislative assembly meeting on October 15.
organisation Democrat Party
Democrat Party of Korea Representative Lee Kwang-hee questioned the city and Seoul City Infrastructure Corporation's response process, personnel changes, and compensation issues in a Seoul City Legislative Assembly meeting on October 15.
organisation Seoul City Legislative Assembly
Democrat Party of Korea Representative Lee Kwang-hee questioned the city and Seoul City Infrastructure Corporation's response process, personnel changes, and compensation issues in a Seoul City Legislative Assembly meeting on October 15.
‎2026/10/18
A Seoul City public bike 'ttaengni' member's personal information of approximately 4,620,000 people was leaked.
organisation Seoul City Infrastructure Corporation's
A Seoul City public bike 'ttaengni' member's personal information of approximately 4,620,000 people was leaked, and the city and Seoul City Infrastructure Corporation's response and accountability have been criticized in a national inquiry.
Tactical Metrics
Metrics
victims
23
Victims
The legislator mentioned that the individual has filed a lawsuit seeking compensation of 300,000 won per person for the 23 victims of the personal information leak, and inquired about the issues of liability for damages and securing funds in the future.
Intelligence Sources
Dailysecu 2026-10-18