Investigating

Ichimasa: employee mailbox intrusion may have exposed partner and staff personal data

On Aug 5, 2026 an employee mailbox was intruded and partner/staff personal data in it may have been viewed; containment same day; disclosed Aug 6.

Last updated: 2026-11-09

Overview

Official partner/staff counts still “under investigation.” The 596 external emails used for apology notices are notification targets, not a confirmed leak count → count blank.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

What you can do

Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.

Sources

  1. 不正アクセスによる個人情報漏えいの可能性について一正蒲鉾株式会社 · 2026-11-09

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