INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Kakao Golf Exposes 34,000 Users' Personal Data in Breach Incident

| 2026-10-08 09:25 HIGH LOW DATA BREACH
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Executive Summary
AI-generated
Kakao Golf, operated by Kakao VX, experienced a data breach involving the personal information of 34,000 individuals on October 7, with the leak confirmed on August 8. The leaked information targeted customers who had reserved domestic tour products from January last year to October this year and included names, phone numbers, golf course reservation dates, accommodation information, and payment records. The attack is believed to be a data breach tactic where phishing was used as a secondary damage, with the company advising users not to click on unclear-sourced links or respond to requests for personal information or authentication numbers. As of now, Kakao VX has activated emergency response systems, blocked external IP addresses, and applied new security policies, while also reporting the incident to relevant authorities such as the Personal Information Protection Commission and the Korea Internet & Security Agency (KISA).
Technical Mitigations AI-generated
• Block external IP addresses involved in the data breach to prevent further unauthorized access. • Apply new security policies, including enhanced authentication and authorization mechanisms for Kakao Golf Reservation users. • Implement additional verification processes for customers who receive requests for reservation changes or additional payments.
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Target & Sectors
Global Scope
Incident Timeline
‎2025/10/08
Threat actors used social engineering tactics to target customers who had reserved domestic tour products on Kakao Golf Reservation from January last year to October this year.
‎August 8
Threat actors used unauthorized external access to target Kakao VX's systems, resulting in the exposure of 34,000 individuals' personal information.
organisation Kakao VX's
On August 8, a notice on Kakao VX's website stated that the company had confirmed the fact that customer information was leaked due to unauthorized external access the previous day.
‎2026/10/08
Kakao Golf experienced a data breach involving the personal information of 34,000 individuals.
organisation IP
Kakao VX has activated emergency response systems, blocking external IP addresses and applying new security policies.
organisation the Personal Information Protection Commission
The company has also reported the incident to the Personal Information Protection Commission and the Korea Internet & Security Agency (KISA).
organisation the Korea Internet & Security Agency
The company has also reported the incident to the Personal Information Protection Commission and the Korea Internet & Security Agency (KISA).
organisation KISA
The company has also reported the incident to the Personal Information Protection Commission and the Korea Internet & Security Agency (KISA).
organisation the Kakao Golf Reservation
Users can check if their information has been leaked on the Kakao Golf Reservation website.
Intelligence Sources
Chosun Economy 2026-10-08