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

Hida Takayama Tourism and Convention Association: attackers planted a program on the Hida Takayama Travel Guide site and took 449 inquiries

A malicious program was planted on the server of the Hida Takayama Travel Guide tourism site, and names and contact details in 449 inquiries were taken. The site is offline.

Disclosed

2026-10-25

Organizations involved

1

Leaked or at risk

449

449

Downtime

Unknown

What happened

  1. The contractor that maintains the site noticed suspicious access to the server. Records showed a third party had planted a malicious program on it and downloaded stored inquiries, and outside access was blocked. The same day, Takayama City announced the site was stopped to deal with a critical PHP flaw. [1] [2]

  2. The association issued its first report. [1] [3]

Impact

449 unique records of people who used the inquiry form between 21 February 2024 and 6 February 2026 or the study visit form between 15 April and 1 July 2026: names (including company and contact names), email addresses, phone numbers, addresses and the inquiry text, with the items varying by person. [1]

The brochure, activity booking and mascot costume forms are not affected. [1]

Cause

The association says the attack exploited a flaw in a system on the server, not the widely reported PHP flaw. The site's PHP fix had been applied on 22 October. [1]

Response

Affected people will be contacted by email. The site stays offline until the cause is found, fixes are in place and it is confirmed safe. [1]

Timeline

  1. Detected 2026-10-23
  2. Disclosed 2026-10-25
  3. 2 days

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][Official]【第一報】観光公式サイト「飛騨高山旅ガイド」への不正アクセスによる個人情報漏洩に関するお詫びとお知らせHida Takayama Tourism and Convention Association · 2026-10-25
  2. [2][Official]観光公式サイト「飛騨高山旅ガイド」停止のお知らせTakayama City · 2026-10-23
  3. [3][News]観光ウェブサイト「飛騨高山旅ガイド」不正アクセス被害 一部情報漏えいGifu Shimbun · 2026-10-26 07:39