The operator of Japan's Yakiniku King barbecue chain said unauthorized access to its reservation and rewards app exposed more than 10 million customer records.
The operator of the Yakiniku King barbecue chain said on Monday that more than 10 million pieces of customer information were leaked after unauthorized access to the system behind its reservation and rewards app, Kyodo News reported from Nagoya.
The company said the exposed material covered almost its entire registered user base. Kyodo's digest did not list the data fields, the date the intrusion was discovered, or whether payment data was included.
The disclosure is one of the larger consumer-data notices reported in Japan this week. No arrest or suspect was named in the Kyodo item.
Customers who used the app for bookings and points are the group the company says was affected. Further notice to users, if issued, was not described in the wire summary.
Regulators and the company had not, in the report used here, published a forensic timeline or a confirmed attacker. Those details remain unstated.