PayPay is a smartphone settlement service jointly funded by Yahoo Japan and Softbank, and this month we made a massive campaign to reduce 20% of payment.

According to the management company, there are dozens of users' contacts that credit card payment that was not memorized using PayPay was done during the campaign period.

In this service, when registering credit card information in an application, it was specified that entry is not restricted no matter how many times a security code of three digits is entered.

For this reason, PayPay adopted measures to limit the number of inputs such as security codes on 18th as a measure to prevent unauthorized use.

The operating company updates the application to the user, and also calls attention to the card company to inquire the unfamiliar claims when there is no reminder.