Joint Ministerial Order on Reporting Specified Cyber Incidents by Designated Infrastructure Operators
重要電子計算機に対する不正な行為による被害の防止に関する法律に基づく特別社会基盤事業者による特定侵害事象等の報告等に関する命令
Published: 2026-05-28 · Source: e-Gov Law Search — Updated Laws · Stage: In Force · Area: Other · Impact (preliminary): Low · First detected by this dashboard: 2026-10-02
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AI summary
Generated by AI from the Japanese source metadata. It is an unofficial monitoring aid, not legal advice, and may contain errors. The area, stage, and impact labels are preliminary keyword-based triage labels. Confirm every point in the original Japanese source.
Summary
This is a joint ministerial order (Order No. 4 of Reiwa 8, issued jointly by several ministries including the Cabinet Office, Ministry of Internal Affairs and Communications, and Ministry of Economy, Trade and Industry) issued under the Japanese law on preventing damage from unauthorized acts against critical computers. Per the metadata, it concerns reporting of specified incidents by designated infrastructure operators. The listed promulgation date is 2026-05-28 and the listed enforcement date is 2026-10-01.
Business Impact
Operators that may fall within the scope of 'specially designated social infrastructure operators' could face incident-reporting requirements once the order takes effect. Whether and how it applies to a given company would depend on the order's text and related designations.
Recommended Action
Review the official Japanese text of the order on e-Gov, including its scope, reporting items, and deadlines, to assess whether it is relevant to your organization.
Timeline of related official records
Related official records are linked only when names and instrument numbers match exactly, so this timeline may be incomplete. Dates are as stated by the official sources. It is a monitoring aid, not legal advice; the original Japanese sources are authoritative.
- 2026-05-28 — Promulgated (instrument recorded by e-Gov Law Search) Original Japanese source
- 2026-10-01 — Effective date stated by e-Gov Law Search Original Japanese source