Enesance Group

1MinorInvestigatingAnnounced

A ransomware attack hit the group. The attacker has published data, covering about 365,000 customer contact records and employee information.

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
Ransomware
Occurred
2025-10-21
Operational impact
None

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

Vuls

Impact Reaches others
future-architect/vuls

An agentless vulnerability scanner that checks the packages installed on a server and lists the ones affected by known CVEs.

Purpose
Defense
Type
Command line
Difficulty
Intermediate
License
CopyleftGPL-3.0
Category
Vulnerability scanning
Actively updatedstars12,302Last update 2026-10-21
Read the Vuls review

Sources

  1. システム障害に関するお知らせ(第4報)www.enessance.co.jp(opens in a new tab)
  2. システム障害に関するお知らせwww.enessance.co.jp · Published 2025-10-23(opens in a new tab)
  3. システム障害に関するお知らせ(続報)www.enessance.co.jp · Published 2025-10-30(opens in a new tab)
  4. システム障害に関するお知らせ(第3報)www.enessance.co.jp · Published 2025-12-08(opens in a new tab)