Overview
552 email addresses only (145 business and 407 individual members). No company names, personal names, addresses or phones. Cause: contractor implementation error.
Timeline
- Occurred
- Discovered
- 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
- 【重要】ひとびとみうら会員様メールアドレスの流出およびメール誤送信に関するお詫びとご報告横須賀商工会議所 · 2026-11-09
- 個人情報漏洩に関するお詫びとお知らせ横須賀商工会議所 · 2026-11-09