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

May 11, 2026arc-reins.com + fidelityunited.ae UPDATE-FULL DATA DUMP listed by stormouson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 516 disclosures indexed across all operators we track. Geographically, arc-reins.com + fidelityunited.ae UPDATE-FULL DATA DUMP is reported in United Arab Emirates.

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

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arc-reins.com + fidelityunited.ae UPDATE-FULL DATA DUMP

Claimed by stormous · listed 9 days ago

Age

since listed · data leaked

Status timeline

Listed
May 11, 2026
Data leaked

At a glance

Group: stormous
Status: Data leaked
Country: United Arab Emirates
Sector: Financial Services
Listed on leak site: May 11, 2026

About the victim

AI dossier — public-source company profile

arc-reins.com and fidelityunited.ae appear to be insurance broking entities operating in the Middle East, with ARC involved in marine, property, civil liability, and risk insurance, and Fidelity United operating in the UAE financial services sector. Both firms work with major international partners and maintain extensive KYC and compliance records. The combined entity handles insurance deals across the Middle East region.

Industry: Insurance Brokerage & Financial Services

Attack summary

Severity: critical — 700 GB of confirmed exfiltrated and published data includes regulated financial and insurance records, large-scale PII (passports, IDs, personal documents) for employees and clients, KYC files (regulated identity data), banking details, and credentials — spanning two financial-sector entities in the UAE. The combination of regulated data at scale, credential exposure, and full publication meets the critical threshold.

Stormous claims to have exfiltrated approximately 600–700 GB of data from both organisations, including compliance audit data, bank details, KYC files, employee personal documents (passports, IDs), insurance archives, client lists, and internal credentials. The data has been published (disclosed status: data_published), indicating full exfiltration with no stated encryption component.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Compliance audit data
Bank account details
Legal licenses
Tax documents
Official contracts
KYC and KYC TOBA files
Employee passports and ID cards
Employee emails and career details
Manager contracts and internal communications
Marine insurance archive (Middle East deals)
Property insurance records
Civil liability insurance records
Risk insurance records
Monthly and annual quality control reports
Collective agreements with international partners
Administrative data
Business travel logs
Passwords and credentials
DC client lists
Digital identities and official signatures
Major client list
Personal information records for brokers

What the group claims

We have gained full control over 700 GB of data, which includes: meticulous compliance audit data, complete Bank details for ARC, legal licenses, tax documents, and official contracts, as well as KYC and KYC TOBA files for all partners.Additionally, personal data for all employees has been extracted, including passports, ID cards, emails, career details, personal documents, and contracts for managers and internal communications. The breach also covers the marine insurance archive with all its deals in the Middle East, property insurance, civil liability, and risk insurance, in addition to monthly and annual quality control reports and collective agreements with major international partners.We have full control over administrative data, business travel logs, passwords, and DC client lists, along with all internal correspondence, digital identities, and official company signatures. The data also includes a list of major clients and thousands of personal information records for Fidelity and ARC brokers, including their full personal details. All of this and more, totaling 600 GB of secrets.

Source

Indexed 9 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.