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

Adventure: unauthorized access to the skyticket back-office system

Adventure said a vulnerability in the skyticket back-office system was exploited on 20 September and found on 28 September. Names, phone numbers and refund bank account details of 17,780 records (with duplicates) leaked or may have leaked; some also include email addresses and birth dates (68) or addresses (18). The same notice disclosed two other unrelated cases.

Disclosed

2026-10-09

Organizations involved

1

Leaked or at risk

17.8K

17,780

Downtime

Unknown

Timeline

  1. Started 2026-09-20
  2. Detected 2026-09-28
  3. Disclosed 2026-10-09
  4. 19 days

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][Official]不正アクセスによるお客様情報の流出に関するお詫びとお知らせAdventure · 2026-10-09