Matsuya Foods Holdings Co., Ltd., which operates the Matsuya gyudon chain, announced that more than 2.37 million pieces of customer information, including names and addresses, had been leaked through unauthorized access to the official app's management system.
Matsuya Foods Holdings Co., Ltd. disclosed the facts, stating that its official app's management system had been accessed without authorization. The scale of the leak is said to exceed 2.37 million records.
The leaked information reportedly included personal data such as customers' names and addresses. The specific data items are said to have been obtained through unauthorized access.