Spiral LowcasStaff assembly system

1MinorPossibleAnnounced Updated

Names, affiliations and emails of about 3,000 staff at two municipalities may have leaked from a staff assembly system, according to reports.

This incident was imported from a dataset that compiles public announcements, and we are still checking it against the sources. Counts and causes will be updated after the check. Sources are in Japanese.

Cause
Via a vendor or service, Account takeover
Occurred
2026-10-20 – 2026-10-21
Sector
Public sector
Operational impact
None

Data involved

DataStatusCountGroupEvidence
NamePossible leakabout 3,000 records—Source(opens in a new tab)
Email addressPossible leakabout 3,000 records—Source(opens in a new tab)

Counts are the figures the organization announced. Because the same person may be counted more than once, we do not add the rows together.

What users should do

  • Watch for emails and texts pretending to be the company

General steps based on the type of data involved. Check the organization’s notice or help line to see whether you are affected.

Tools for this kind of attack

Picked from the cause of the incident: tools that help you check your own systems for the same kind of weakness, or spot the warning signs.

Wazuh

Impact Local only
wazuh/wazuh

A free security platform (SIEM/XDR) that collects logs, configuration, and vulnerability data from agents on your endpoints and shows it all in one dashboard.

Purpose
Defense
Type
Self-hosted server
Difficulty
Advanced
License
CopyleftGPL-2.0(一部の構成要素は Apache-2.0)
Category
Vulnerability scanning / Forensics
Actively updatedstars17,410Last update 2026-10-24
Read the Wazuh review

Sources

  1. 【ご報告】職員参集システムにおける不正ログインの発生および個人情報保護委員会への報告についてspiral-locas.co.jp · Published 2026-10-22(opens in a new tab)
  2. 2自治体の職員名流出か IT企業に不正アクセスwww.47news.jp · Published 2026-10-23(opens in a new tab)