Yellow Hat Ltd.
Apology and Notice Regarding Personal Information Leak Due to Unauthorized Access at Yellow Hat — Second Report
Reconfirmed scope and cause of personal information leak due to unauthorized access based on a third-party investigation. Approximately 179,7124 people were affected; mainly name, address, date of birth, gender, and contact details. No credit card information was collected or handled. Recurrence prevention measures have been implemented and vulnerability assessments will continue. Future impact on financial results is expected to be not material.
Key Figures
- Number of records affected: 1,797,124 people
- Difference from first report: corrected from up to 1,801,499 people → 1,797,124 people
- Types of data affected: Name · Address · Date of birth · Gender · Telephone number · Email address · Member number · Login ID · Password (non-recoverable state)
AI要約
Overview and Cause
This second report concerns a personal information leak caused by unauthorized access to the Yellow Hat WEB work reservation system, and it discloses the results of a third-party investigation and recurrence prevention measures. The affected scope is approximately 1,797,124 records and includes name, address, date of birth, gender, telephone number, and other items. No credit card information was collected or managed, so there was no leakage of such information. Upon discovery, the system was immediately shut down and later restarted, and security reinforcements were implemented. Regular vulnerability assessments will continue going forward.
Impact and Response
Affected customers are being notified individually and a dedicated contact window has been established to continue responses. To prevent further damage, warnings regarding related URLs and links have been issued, and inquiries are being handled via a dedicated help desk. Looking ahead, response costs are not expected to have a material impact on financial results.
Yellow Hat Ltd.
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