● Covered by 1 source · 1 reportMedium impact1 negative
Malware incident at Nippon Columbia exposes 8.7 million Daiichi Kosho customer and employee records
Key points
- Malware infected a Nippon Columbia employee computer on October 5.
- 8.7 million records of Daiichi Kosho customers and employees were exposed.
- Exposed data includes names, dates of birth, emails, and phone numbers.
- Daiichi Kosho's own systems were not breached.
Malware Infection at Contractor
Daiichi Kosho, a major Japanese entertainment system maker, disclosed a malware infection at its contractor, Nippon Columbia Group (NCG). Nippon Columbia informed Daiichi Kosho on October 5 about the malware discovery on an employee's computer, with the affected system isolated the following day.
Data Exposure Details
The incident exposed records for 93,000 employees and 8,631,000 customers, totaling over 8.7 million records. The exposed data includes full names, genders, dates of birth, email addresses, and telephone numbers. Passwords and loyalty points data were not included in the exposure.
Impact on Customers
The exposed data affects customers of Daiichi Kosho's karaoke chains, including BIG ECHO, MEGA BIG, Karaoke CLUB DAM, Banana Club, B-GARAGE, and DK Dining. Daiichi Kosho has not confirmed any data theft or leaks but advises customers to be cautious of unsolicited communications requesting personal or financial information.
Company Response and Investigation
Daiichi Kosho stated that its own systems were not breached. NCG has reset passwords and other authentication credentials and is currently investigating the cause and scope of the incident, including whether any data has been leaked online. No further updates on potential data leaks have been provided.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
Nippon Columbia, a contractor for Japanese entertainment company Daiichi Kosho, experienced a malware infection that exposed over 8.7 million customer and employee records. The exposed data includes names, genders, dates of birth, email addresses, and telephone numbers, impacting customers of several karaoke chains.