Japanese entertainment system maker Daiichi Kosho has disclosed a data breach stemming from a malware infection at its contractor, Nippon Columbia. The incident exposed more than 8.7 million customer and employee records, including data tied to karaoke fans.
The breach appears to have occurred through the contractor's systems, underscoring how third-party relationships can widen the attack surface for large organizations. Daiichi Kosho's disclosure does not detail the specific types of data involved or how the malware gained access.
With millions of records affected, the incident ranks among the larger recent breaches in Japan's entertainment sector. It also serves as a reminder that companies must scrutinize the security practices of vendors that handle their customer data.