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

Ateam: Google Drive sharing mistakes left the personal data of 935,779 people viewable

From March 2017 to November 22, 2023, 1,369 files were open to anyone with the link. Names, email addresses and more of 935,779 people could be viewed.

Disclosed

2023-12-07

Organizations involved

1

Leaked or at risk

935.8K

935,779

Downtime

Unknown

What happened

  1. A report checking the accuracy of a security product under consideration flagged risky files, and it found that some files on the group's Google Drive could be viewed by outsiders. [1]

  2. It restricted access to the files and ended the viewable state. [1]

  3. After a preliminary report to the Personal Information Protection Commission, it published a first notice. [1]

  4. It filed the final report with the Personal Information Protection Commission. [1]

  5. It published the investigation results. [1] [2]

Impact

Files containing personal data numbered 1,369 and the people affected 935,779 (unique). They include past customers of its services, contacts at business partners, job applicants and interns, and employees including former ones. The data included device identification numbers, customer management numbers, email addresses and names, but no special-care data or data that could cause financial loss. No misuse has been confirmed. [1]

The cause was leaving the viewing range of files made on Google Drive at "anyone on the internet with the link". The viewable period runs from the creation of the oldest file, March 2017, to November 22, 2023. [1]

Timeline

  1. Started 2017-03-01
  2. Detected 2023-11-21
  3. Disclosed 2023-12-07
  4. 2472 days

Attack or cause

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

Data exposed or at risk

[Name][E-mail address]

Organizations involved

Open in organization search

Sources

  1. [1][Official]個人情報漏えいの可能性に関するご報告とお詫びAteam Holdings Co., Ltd. · 2023-12-21
  2. [2][News]Googleドライブの閲覧範囲の設定誤り、935,779人の個人情報が閲覧可能な状態にScanNetSecurity · 2023-12-27 08:05