According to Security NEXT, Japan's Ministry of Economy, Trade and Industry (METI) announced that the Dentrinet website associated with the Electricity and Gas Market Surveillance Commission suffered a cyberattack in the early hours of October 27, 2026 [1]. The incident was discovered the following day, the website was taken offline, and authorities are investigating potential impacts including data leakage [1]. The website is normally used by electricity and gas retailers to submit periodic trading reports, which are being accepted via email until service is restored [1].
This event has not been officially confirmed. Content is based on media or third-party reports.
MediumMonitoringMedia reported
Japan Electricity and Gas Trading Reporting Website Attacked; Submissions Shifted to Email
1 min read
- Disclosed
- Oct 30, 2026
- Published
- Nov 10, 2026
- Last updated
- Nov 7, 2026
- CVSS basis
- Our assessment
- Attack vector
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government
What to do nowOur advice
The website is normally used by electricity and gas retailers to submit periodic trading reports, which are being accepted via email until service is restored [1].
Timeline
- Security NEXT publishes report (date only; timestamp is a placeholder)[1]
Technical details
Source-Verified Summary
Japan's Ministry of Economy, Trade and Industry (METI) announced that the Dentrinet website associated with the Electricity and Gas Market Surveillance Commission suffered a cyberattack in the early hours of October 27, 2026 [1].
The incident was discovered the following day, the website was taken offline, and authorities are investigating potential impacts including data leakage [1].
The website is normally used by electricity and gas retailers to submit periodic trading reports, which are being accepted via email until service is restored [1].
References
Media1
- [1]
“経済産業省は、電力・ガス取引監視等委員会の関連サイトがサイバー攻撃を受けたことを明らかにした。サイトを停止し、調査を行っている。”
This site aggregates public information and is not security consulting advice. Test remediation steps before applying.