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[Investigating][Severity: Moderate][Intrusion]

METI: Dentori-net intrusion at the Electricity and Gas Market Surveillance Commission

Intruders reached Dentori-net, the site of METI's Electricity and Gas Market Surveillance Commission, which was taken offline; whether data leaked is being checked.

Disclosed

2026-10-28

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. In the early hours, Dentori-net, the site electricity and gas companies use for regular reports, was accessed illegally. [1] [2]

  2. The intrusion was confirmed, the site was stopped and the incident was published. [1] [2]

Impact

Whether data leaked is being checked. The site remains offline, and reports are taken by email instead. [2]

Timeline

  1. Started 2026-10-27
  2. Detected, Disclosed 2026-10-28
  3. 1 days

Attack or cause

Method
[Intrusion]
Impact
[Service outage]
Entry point
Web app

Data exposed or at risk

–

Organizations involved

Sources

  1. [1][Official]電力・ガス取引監視等委員会ウェブサイトへの不正アクセスについてMETI · 2026-10-28
  2. [2][News]経産省「デントリネット」不正アクセスで停止　電力・ガス事業者の定期報告サイトITmedia NEWS · 2026-10-29