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Email accounts of the former Daiko Business were accessed without authorization. The old mail server was shut down and operations moved to a new domain.

This incident was imported from a dataset that compiles public announcements, and we are still checking it against the sources. Counts and causes will be updated after the check. Sources are in Japanese.

Cause
Email account compromise
Operational impact
Some services stopped

Sources

  1. 弊社メールシステムへの不正アクセスに関する最終報告www.daiko-xtech.co.jp · Published 2026-09-01(opens in a new tab)