> JapanHacked_
[Investigating][Severity: Major][Web app exploit]

Vook: database accessed through a data analysis tool flaw

Attackers used a flaw in a data analysis tool Vook ran internally to read its database, possibly leaking personal data of members, event applicants and business contacts.

Disclosed

2026-10-30

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. An internal check found a suspicious account in its data analysis tool that Vook had not created. [1]

  2. It confirmed that a third party had likely used a flaw in the tool to reach the database and take data. It invalidated all members' login credentials and changed the database connection credentials. [1]

  3. It published its first report; it has reported to the Personal Information Protection Commission and consulted the police. [1]

Impact

Members, event applicants, people who contacted Vook and contacts at partner and client companies are affected. Names, email addresses, phone numbers, addresses, dates of birth, employers, parts of career and education histories, the invalidated login credentials, viewing passwords of posted works and IP addresses may be included. The tool could only read data and no tampering was found. The number of people is still being checked. Card and bank data and members' login passwords were not included. [1]

Timeline

  1. Detected 2026-10-14
  2. Disclosed 2026-10-30
  3. 16 days

Services hit

Organizations involved

Sources

  1. [1][Official]不正アクセスによる個人情報漏えいの可能性に関するお詫びとお知らせ【第一報】Vook · 2026-10-30