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 220 public disclosures across our corpus. First observed on a leak site on March 22, 2022; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

March 28, 2026Acuity listed by Stormouson the group's public leak site

Data size: 73
Ransom demanded: $900

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track.

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.

Ransomware victim disclosure

← All victims

Acuity

Claimed by Stormous · listed 2 months ago

Data size

$900

Ransom

demanded

53d

Age

since listed · data leaked

Status timeline

Listed
Mar 28, 2026
Data leaked

At a glance

Group: Stormous
Status: Data leaked
Sector: Business Services
Listed on leak site: Mar 28, 2026
Data size: 73
Ransom demanded: $900

About the victim

AI dossier — public-source company profile

Acuity is identified in the leak post as a business services company. The post references internal system data, partner data, customer data including emails, names and phone numbers, admin data and roles, as well as legal documents such as NDAs involving strategic partners like Bosch and financial analyses of Acuity's financial position. No further public site details were available to confirm location or scale.

Industry: Business Services

Attack summary

Severity: high — Confirmed exfiltration and publication of significant business data including customer PII, partner records, admin credentials, and sensitive legal/financial documents; 73 GB of data published.

Stormous claims to have exfiltrated 73 GB of data from Acuity, including internal system data, partner and customer records (email, name, phone number), admin credentials and roles, NDA drafts involving partners such as Bosch, and detailed financial documents; data is listed as published.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal system data
Partner data
Customer data (email, name, phone number)
Admin data and roles
NDA drafts (including Bosch-related)
Financial analysis documents

What the group claims

Internal Data, System Data, Partner Data, Customer Data (Email, Name, Phone Number), Admin Data and their roles

The leak post

captured from the group's site

Initial Access Brokers - Long-Term Collaboration
We are currently seeking reliable Initial Access Brokers for long-term collaboration.
** Please do not waste time attempting complex exploit development or direct EDR confrontation. We are interested exclusively in stable corporate access.
Local user access is acceptable.
  * Small to mid-sized enterprises: fixed payment starting at 
  * Large enterprises: revenue share from final settlement


FANASA.COM Half the data has been extracted
Personally Identifiable Information (PII), Electronic Fiscal Documents (CFDI/XML), Financial Transaction Records, Commercial Invoices & Billing Data, Taxpayer Identification Numbers (RFC), Client & Vendor Database/Internal Corporate Documentation
Administrative/System Files/ADMIN, DOAS, operational records, engineering drawings, schematics...
Project Planning & Execution Documents...
(Folders/Files) Email/Communication/System/Application Data AYEAPLICACIONES database/Log Data BDATOSFITCLOD, Software/Installation/Program Files AUTOBOU, Personal/Miscellaneous Files AvenaCubana
All of this data is offered for sale (user information: email, phone number, full name, date of birth / payment and bookin…

Data the group says was taken

PII
emails

Sources

Leak posthttp://pdcizqzjitsgfcgqeyhuee5u6uki6zy5slzioinlhx6xjnsw25irdgqd.onion

Source

Indexed 2 months 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.

Disclosure context

About Stormous

Timeline of this disclosure

Other recent disclosures by Stormous

Sector and geography

Status timeline

At a glance

About the victim

Attack summary

Data the group says was taken

What the group claims

The leak post

Data the group says was taken

Sources

Source