> JapanHacked_
[Investigating][Severity: Critical][Misconfiguration]

Aplus, Shinsei Bank and Shinsei Financial: customer login details and email addresses were mistakenly given to web analytics contractors, 475,813 customers at Aplus

IDs and passwords of 475,813 users of Aplus's smartphone app had gone to two web analytics contractors since 2017. No secondary leak was found.

Disclosed

2021-09-16

Organizations involved

3

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. Aplus began providing data to the web analytics contractors. App login details were included from around this time. [1]

  2. Shinsei Bank was checking data returned by a contractor and found that it contained login details. [1]

  3. Aplus announced the case. [1]

  4. Shinsei Bank and Shinsei Financial announced that they had likewise passed customer data to contractors. [2]

Information provided

The IDs and passwords used to log in to Aplus's credit card member app NETstation*APLUS, for 475,813 users. There is no sign of leaks beyond the two contractors, and the credentials alone cannot be used to pay by card. [1]

Email addresses of 6,293 customers of Shinsei Bank's card loan Lake and 2,108 of Shinsei Financial. Separately, 37 and 54 records with PINs or account information on the Lake new-application page, and 2 records with member numbers, PINs and birth dates, were included. [2]

Timeline

  1. Started 2017-08-25
  2. Detected 2021-09-03
  3. Disclosed 2021-09-16
  4. 1483 days

Organizations involved

Open in organization search

Sources

  1. [1][Official]会員様向けマイページのログインID・パスワードが業務委託先へ誤って提供されていたことに関するお詫びAplus Co., Ltd. · 2021-09-16
  2. [2][Official]業務委託先等への提供データに一部のお客さま情報が含まれていたことに関するお詫びShinsei Bank, Ltd. and Shinsei Financial Co., Ltd. · 2021-09-27