Yellow Hat Reports Breach in Web Work Reservation System, Possible Leak of 1.8 Million Member Records
Yellow Hat, a major Japanese retailer of car parts and accessories, has confirmed a security breach affecting its online Web Work Reservation System.
The system, used by customers to book maintenance services such as oil changes, battery replacements, and vehicle inspections, was found compromised on August 18, 2026. Subsequent investigation revealed that personal information stored on the company's member server may have been accessed and leaked externally.
Up to 1,801,499 members could be impacted. The exposed data includes names, telephone numbers, email addresses, and member numbers.
Yellow Hat has reported the incident to police and the Personal Information Protection Commission. Affected members are being notified via email, SMS, telephone, or postal mail, with warnings to watch for any suspicious unsolicited contacts.
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