> JapanHacked_
[Resolved][Severity: Major][Misconfiguration]

LINE Pay: campaign participation data was viewable on GitHub, involving 51,543 accounts in Japan

A group-company contractor's employee uploaded an investigation program and payment data to GitHub, making it public. Names and addresses were not included.

Disclosed

2021-12-06

Organizations involved

1

Leaked or at risk

51.5K

51,543

Downtime

Unknown

What happened

  1. Around 15:13 an investigation program and payment data were unintentionally uploaded to GitHub and became viewable. [1] [2]

  2. It detected the data at 18:27 through internal monitoring and finished deleting it from GitHub at 18:45. [1]

  3. It finished checking the access and secondary spread. [1]

  4. Around 16:00 it notified the affected users and announced the case. [1] [2]

Impact

The identifiers, merchant management numbers and campaign information (name, payment amount and date) of 51,543 accounts in Japan (133,484 including overseas) for December 26, 2020 to April 2, 2021 were viewable from September 12 to November 24, 2021. Names, addresses, phone numbers, email addresses, card numbers and account numbers were not included. Outsiders accessed the data 11 times. [1] [2]

Timeline

  1. Started 2021-09-12
  2. Detected 2021-11-24
  3. Disclosed 2021-12-06
  4. 85 days

Attack or cause

Method
[Misconfiguration]
Impact
[Data leak]
Entry point
Unknown

Data exposed or at risk

[Purchase history]

Organizations involved

Open in organization search

Sources

  1. [1][Official]【LINE Pay】一部ユーザーのキャンペーン参加に関わる情報が閲覧できる状態になっていた件のお知らせとお詫びLINE Corporation · 2021-12-06
  2. [2][News]LINE Payユーザー51,543アカウントの識別子がGitHubで閲覧可能にScanNetSecurity · 2021-12-08 08:05