Restaurant chain operator Monogatari Corporation announced on the 5th that its Yakiniku King yakiniku chain's official app suffered unauthorized access, resulting in the leak of members' personal information. The leaked data totaled 10,788,963 records, accounting for the majority of registered members, and included names, email addresses, and phone numbers. According to the company, it detected unauthorized access by a third party on the 2nd and implemented defensive measures such as blocking communications, and confirmed the personal information leak on the 3rd. Login passwords and held points were not leaked, and the company says it does not hold payment information such as credit card numbers. The company commented, "We apologize for causing tremendous inconvenience and concern," and said it will strengthen security measures and monitoring systems.
Monogatari CorporationUnauthorized access to Yakiniku King app leaked 10.78 million member records, exposing the company to security/legal and reputational fallout.
