Unauthorized Access to the Genkai Town Furusato Tax Special Site Leads to Data Breach: Domestic Data Breach Case 2024
Feb. 27, 2025
⚠️ Local Government Systems Targeted!
💻 On August 20, 2024, the Furusato Tax Special Site of Genkai Town, Saga Prefecture, was compromised by an external attack, resulting in a massive data breach.
🔴 The attackers exploited an SQL injection vulnerability to infiltrate the database, potentially stealing the personal information of approximately 413,867 individuals.
📢 This article provides an in-depth analysis of the attack method, impact scope, local government response, and measures for preventing future incidents.
🛡️ We also introduce essential security measures that local governments and businesses should implement!
- 📢 Incident
Table of Contents

📢 Incident
📅 Date of Occurrence: August 20, 2024
🏛️ Affected Entity: Genkai Town Furusato Tax Special Site
🔓 Leaked Data: Personal information of approximately 413,867 individuals
📌 This case highlights the severity of cyberattacks targeting local government online services.
📆 Timeline of Unauthorized Access and Discovery
📅 August 20, 2024: The site experienced delayed response times.
🔍 Investigation confirmed unauthorized external access.
📢 August 27, 2024: The unauthorized access was officially disclosed, and the site was taken offline.
⚠️ A classic case of a cyberattack targeting local government digital infrastructure!
🛑 Attack Methods and Causes
🕵️♂️ Attack Technique: SQL Injection
💡 Method: Exploiting vulnerabilities in input forms to gain unauthorized database access.
🚨 Cause of the Attack: A security vulnerability introduced during the site modification on May 16, 2024.
📢 Proper security checks could have prevented the breach!
📊 Potentially Leaked Data
📧 Donors' Email Addresses: 📩 413,818 records
📞 Donors' Phone Numbers: 📱 33 records
🆔 Site Members’ Login IDs: 🔑 29 records
🔐 Encrypted Site Members' Passwords: 🔑 2,664 records
🏛️ Local Government Staff Accounts: 🛡️ 46 records
🏢 Business Accounts of Gift Providers: 🏢 1 record
🚨 Total: Approximately 413,867 personal records may have been compromised!
🔧 Response and Prevention Measures
🛠️ Immediate Response
✅ Site taken offline
✅ Security audit conducted by external experts
✅ Users advised to change their passwords
🔐 Preventive Measures
🚀 Implementation of cloud security solutions
🔍 Strengthening regular security audits
📢 Raising awareness about phishing attacks among users
🛡️ Lessons Learned and Future Actions
🔴 Local government online services are also prime targets for cyberattacks!
🛠️ Security audits during site modifications must be thorough, and SQL injection prevention must be reinforced.
📢 In case of a data breach, swift disclosure and immediate victim support are key to restoring trust!
💡 "Being a local government does not mean you're not a target"—in fact, it makes you an even bigger target. Strengthening security is essential!
📢 Summary
⚠️ Local government online systems were targeted, leading to a breach of approximately 410,000 records!
💻 SQL injection was used to extract sensitive data from the database.
🚨 Proper security measures could have prevented the incident.
✅ Review your organization’s security policies now using the countermeasures outlined in this article!
📜 Source: Official Announcement
🚀 Take action now to strengthen the security of your organization or local government!
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🇯🇵🔓Major Data Breaches in Japan 2024 | Key Incidents, Cyber Attacks, and Countermeasures
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1Unauthorized Access to the Genkai Town Furusato Tax Special Site Leads to Data Breach: Domestic Data Breach Case 2024
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2Unauthorized Access to Nagasaki Prefecture Product Promotion Association's E-Commerce Site Leads to Data Breach: Japan Data Breach Case 2024
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3RIZAP Data Breach: 365K Customer Records Exposed by Cloud Misconfiguration