Cabinet Office Email Service Data Breach and Newsletter Suspension
Overview
The Cabinet Office received a report that personal information belonging to newsletter users had been leaked following unauthorized access by a third party to the email delivery service it uses. The newsletter has been suspended because the service has been stopped. The Cabinet Office apologized to users and directed them to the provided PDF for details.
Key points
- A report was received that personal information had been leaked following unauthorized access by a third party.
- The newsletter has been suspended following the suspension of the email delivery service.
- The Cabinet Office apologized to users and provided details in a PDF.
Overview
The Cabinet Office uses an email delivery service provided by Arara Inc. to distribute its newsletter.
Impact
Personal information belonging to newsletter users was leaked, and distribution has been suspended. The Cabinet Office apologized for causing users considerable inconvenience and trouble.
Details
The Cabinet Office received a report that a third party had gained unauthorized access to the service and that personal information had been leaked. Following the service's suspension, newsletter distribution was suspended, and a PDF was provided with further details. The announcement was dated November 11, 2026.