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[Contained][Severity: Critical][Web app exploit]

VOISING: unauthorized access to a BI tool it uses

On 18 August, VOISING, the agency behind 2.5D idol groups such as Ireisu, said customer data leaked through unauthorized access to a BI tool it uses internally. Access began at about 1:02 on 10 August, and data in the tool was downloaded from 18:47 to 20:21 on 16 August; it noticed late that night and shut down and isolated the system early on 17 August. About 170,000 records were affected: names, addresses, phone numbers, emails, birth dates, genders, purchase histories, payment amounts and which talent customers support. The cause was a vulnerability in the BI tool exploited before a fix was applied. Its third report said some of the data was found published on social media and elsewhere.

Disclosed

2026-08-18

Organizations involved

1

Leaked or at risk

170K

170,000

Downtime

Unknown

Timeline

  1. Started 2026-08-10
  2. Detected 2026-08-16
  3. Disclosed 2026-08-18
  4. 8 days

Organizations involved

Open in organization search

Sources

  1. [1][Official]当社が利用するBIツールへの不正アクセスおよび個人情報漏えいに関するお詫びとお知らせ並びに不審な連絡等への注意のお願いVOISING · 2026-08-18
  2. [2][Official]【第四報】当社が利用するBIツールへの不正アクセスおよび個人情報漏えいに関する調査結果と再発防止策についてVOISING
  3. [3][News]2.5次元アイドル「いれいす」事務所への不正アクセス、最大17万人に影響 “推し”情報や購買履歴も漏えいかITmedia NEWS · 2026-08-21