Daiichi Kosho Big Echo Data Breach
Daiichi Kosho Co., Ltd., Japan's premier karaoke systems manufacturer and operator of the Big Echo karaoke and DK Dining restaurant networks, disclosed a major supply-chain cybersecurity incident.
Exposed Data Types
5- Names
- Genders
- Dates of birth
- Email addresses
- Phone numbers
About This Breach
Malware discovered on an employee workstation at an external business contractor, Nippon Columbia Group (NCG), compromised temporary customer data files. The incident exposed approximately 8.72 million records, comprising roughly 8.63 million customer accounts across Big Echo (~5.6 million) and DK Dining (~3.5 million), alongside 93,000 corporate personnel records. Exposed data attributes include registered customer full names, genders, dates of birth, email addresses, and phone numbers.
Verification and editorial method
LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.
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