Card information leaked on the site related to “Shogakukan” There is also a risk of unauthorized use November 16 20:44
It was found that the system of the online shop operated by the affiliated company of the major publishing company “Shogakukan” was illegally accessed, and more than 1,000 credit card information was leaked in the five years up to June, and it was found that there was a risk that it had been used illegally.
What leaked was the customer’s credit card information using BOOK SHOP Shogakukan, an online shop operated by Shogakukan Publishing Service.
According to the company, the name of the card for 1036 users, the card number and expiration date, and the security code were leaked.
In June, the company received a report from a credit card company that there was a risk that information about people who had used the site had been leaked, and we have been conducting an investigation.
As a result, it was found that there was unauthorized access to the server of the system, and in the five years from April 13, 2015 to June 15, the information of some users who made credit card payments on this site may have been leaked and used illegally.
The company has been suspending the operation of the site since June, and will strive to prevent recurrence by contacting users who may have leaked information individually and strengthening system safety measures.