Confirmed

Yokosuka City: data of 145 people and 12 firms leaked via misattached tax FP-consultation list

On April 8, 2026 the tax office emailed the wrong FP-consultation list to another firm; noticed April 15 after one recipient opened then deleted it; disclosed April 16.

Last updated: 2026-11-09

Overview

Count stores 145 individuals (12 corporations described in text). Name, meeting date, arrears and consultation notes among fields.

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. 個人情報等データの誤送付について横須賀市 · 2026-11-09

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