2020 PayPay — 20M Japanese QR payment users

2020 20.1M records affected

Data compromised

User account data, transaction info

Technical writeup

PayPay, Japan's largest QR code payment service (SoftBank/Yahoo Japan venture), suffered a breach affecting 20 million users. The breach was caused by improper security settings allowing unauthorized access.

Root cause

Improper security settings; hacking

References

https://en.wikipedia.org/wiki/List_of_data_breaches