Onamae.comDesktop Cloud

1MinorPossibleAnnounced Updated

Information was taken from Onamae.com Desktop Cloud. Brokerage login data stored on servers may have been misused. A 5,000 yen consolation payment and compensation for approved unauthorized trades were announced.

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
Unauthorized access
Sector
IT, cloud & telecom
Operational impact
None

Data involved

DataStatusCountGroupEvidence
PasswordPossible leakNot disclosed—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

  • Change your password
  • Change the password on other services where you reused it

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.

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

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

Suricata

Impact Reaches others
OISF/suricata

An intrusion detection and prevention engine (IDS/IPS) that matches network traffic against rules and records suspicious activity as alerts.

Purpose
Defense
Type
Self-hosted server
Difficulty
Intermediate
License
CopyleftGPL-2.0
Category
Network
Actively updatedstars6,773Last update 2026-10-23
Read the Suricata review

Sources

  1. 【重要】【重要】[お名前.com デスクトップクラウド]第三者による不正アクセスに関するお詫びとお知らせ(2026年10月21日 4:00時点)www.onamae.com · Published 2026-10-21(opens in a new tab)
  2. 「お名前.com」 のFX自動売買VPS、不正アクセスで金銭被害か 「600万円の損失」「55万円なくなった」……報告相次ぐwww.itmedia.co.jp · Published 2026-10-23(opens in a new tab)
  3. GMOのFXサービス不正操作か 取引口座のパスワード漏えい恐れwww.47news.jp · Published 2026-10-22(opens in a new tab)
  4. 【重要】お名前.com デスクトップクラウドサービスに対するサイバー攻撃について(第4報)group.gmo · Published 2026-10-24(opens in a new tab)