Confirmed

Sapporo Toyohira: winter road-closure page wrongly posted residential-map names (259 entries)

When updating Toyohira Public Works’ winter road-closure page, staff wrongly used internal-only residential map data, posting household names from 2025-11-18 until discovery on 2026-05-28; posting stopped same day; disclosed Aug 7.

Last updated: 2026-11-09

Overview

259 entries (2016 residential map; Hiragishi / Tsukisamu-nishi / Nishioka areas).

Timeline

2025-11-18Occurred
2026-05-28Discovered
2026-08-07Disclosed

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

個人情報漏えいに関するお詫び札幌市豊平区 · 2026-11-09

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