> JapanHacked_
[Contained][Severity: Moderate][Intrusion]

Sapporo City: Eki Bus Navi breach sends false transit alerts; information services suspended

A breach of Eki Bus Navi sent false transit alerts. The city stopped the service and subway status updates; personal-data exposure is not confirmed.

Disclosed

2026-11-09

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

False alerts and suspended services

At about 06:35 and 12:10 on 9 November, external unauthorized access to Eki Bus Navi’s distribution system resulted in false transit information. At about 12:40, the city stopped Eki Bus Navi and part of the transportation website, including status updates on its homepage, to prevent confusion and verify safety. [1]

Personal-data exposure is not confirmed. Services will reopen after safety checks; urgent updates use station displays and official city social accounts meanwhile. The notice concerns information services, not a confirmed compromise of trains or operational control systems. [1]

Timeline

  1. Started, Detected, Disclosed 2026-11-09
  2. 1 days

Attack or cause

Method
[Intrusion]
Impact
[Site defacement][Service outage]
Entry point
Unknown

Data exposed or at risk

–

Services hit

Open in service search

Organizations involved

Sources

  1. [1][Official]札幌市交通局公式ホームページ(一部)の一時停止についてSapporo City Transportation Bureau · 2026-11-09