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HIGUCHI INC

listed as BN: higuchi-inc Report Error & Warning⁠ · Claimed by Stormous · listed 2 days ago

2d
Age
since listed · data leaked

Status timeline

  1. ListedJul 1, 2026
  2. Data leakeddate unknown

At a glance

Group
Stormous
Status
Data leaked
Sector
Business Services
Listed on leak site
Jul 1, 2026

About the victim

AI dossier — public-source company profile

HIGUCHI INC is a Japanese business services company operating multiple branches across various regions. The company uses Sage software for operations management.

Industry
Business Services

Attack summary

Severity: high — Confirmed exfiltration of 102 GB of operational data (Sage backups) and commercial documents across multiple company branches with explicit threat of publication; affects multiple operational sites.

Stormous claims to have conducted an unauthorized access incident affecting 3 branches across multiple regions. The group claims to have exfiltrated 102 GB of Sage software backups and commercial documents, and threatens publication within an 8-day grace period.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Sage software backups
  • Commercial documents

What the group claims

www.higuchi-inc.co.jp/newsrelease/company/doc/unauthorized_access_incident.pdf // We have reviewed the report issued by HIGUCHI INC. To correct their mistake: the breach did not affect just one branch, but rather 3 different branches across various regions.Your data has not been leaked yet, as you are currently within an 8-day grace period. Before we publish any of your commercial or personal data, be aware that we possess 102 GB of Sage software backups, alongside numerous commercial documents.We await your reply to our messages. Follow the correct path to ensure nothing is leaked. We are waiting for you.

Source

Indexed 2 days ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Stormous

Stormous is a relatively new ransomware group that emerged in March 2022, operating primarily with financial motivations and has claimed responsibility for attacks against at least 165 victims across multiple countries and sectors. The group's country of origin remains unclear from publicly documented sources, though their operational patterns suggest they may operate as an independent entity rather than a established ransomware-as-a-service model. Limited public documentation from major security firms indicates the group employs common ransomware tactics, though specific details about their initial access vectors, encryption methods, and data exfiltration practices have not been extensively detailed in reports from CISA, FBI, or major threat intelligence providers. Their targeting appears geographically diverse with a focus on Spain, the United States, France, UAE, and Brazil, while showing particular interest in technology, hospitality and tourism, government, and business services sectors, though many of their victims span unspecified industries. As of current reporting, Stormous appears to remain an active threat, though the limited public documentation suggests they operate as a lower-tier ransomware group compared to more prominent families that receive extensive coverage from major security research organizations. The group has been linked to 245 public disclosures across our corpus. First observed on a leak site on March 22, 2022; most recent post July 1, 2026. The operation is currently active.

Timeline of this disclosure

  • July 1, 2026BN: higuchi-inc Report Error & Warning⁠ listed by Stormouson the group's public leak site

Other recent disclosures by Stormous

Stormous has been linked to 245 public victims on Darkfield. A sample of the most recent:

See the full Stormous dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track.

If your organisation is affected

A listing by Stormous means BN: higuchi-inc Report Error & Warning⁠ appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Monitor for the data appearing on Stormous's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.