SignalAtlas
Share a reportManage my posts
Confirmed

Edogawa City: SD card loss exposed personal data of 904 students

A junior-high teacher kept student personal data on a personal SD card and lost it on June 13, 2026; the city disclosed June 29. Scope is 904 students (some alumni FY2014–2025 and some current Year-3).

Last updated: 2026-11-09

Overview

904 people.

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. 区立中学校における個人情報の入ったSDカードの紛失江戸川区 · 2026-11-09

Related information

Share a report

No published information yet

Information appears here after source checks or moderation.

Comments and replies

Write a comment

No account needed. Comments appear immediately.

Do not post private names, addresses, passwords, or codes. Automatic masking is limited; review your content before submitting.

Required fields are marked *.

After submitting the text, you can redact and attach images.

Loading the security check. You can submit once it is complete.