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STELIA North America

Claimed by Rhysida · listed 2 months ago

9.3 TB
Data size
4324287 files records
2m
Age
since listed · data leaked

Status timeline

  1. ListedMay 16, 2026
  2. Data leakeddate unknown

At a glance

Group
Rhysida
Status
Data leaked
Country
Canada
Sector
Aerospace and Defence
Listed on leak site
May 16, 2026
Data size
9.3 TB
Records
4324287 files

About the victim

AI dossier — public-source company profile

STELIA North America is a Canadian aerospace and defence company specialising in the design, development, and manufacturing of composite structures and components. The company works as a supplier and partner to major defence and aerospace primes including Lockheed Martin, Northrop Grumman, Sikorsky, Boeing, Airbus Atlantic, Bombardier, and others. It operates within the broader STELIA Aerospace / Airbus group ecosystem.

Industry
Aerospace & Defence Composites Manufacturing

Attack summary

Severity: critical — Over 9.3 TB of data has been fully published publicly, spanning a defence and aerospace manufacturer with documented ties to multiple major defence primes (Lockheed Martin, Northrop Grumman, Sikorsky, Boeing, etc.). The exfiltration and full publication of data at this scale from a defence supply-chain company constitutes a critical national-security and regulated-data exposure event, with significant potential for controlled/export-restricted technical data disclosure across multiple allied-nat

Rhysida claims to have exfiltrated approximately 9.3 TB of confidential data comprising over 4.3 million files from STELIA North America and states that all files have been published to public access. The stolen data reportedly includes sensitive information related to major defence and aerospace partner companies such as Lockheed Martin, Northrop Grumman, Sikorsky, Leonardo, L3Harris, Airbus Atlantic, Boeing, Bombardier, De Havilland, ARDE, and MDA.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Confidential partner company data
  • Lockheed Martin project/programme files
  • Northrop Grumman project/programme files
  • Sikorsky project/programme files
  • Leonardo project/programme files
  • L3Harris project/programme files
  • Airbus Atlantic project/programme files
  • Boeing project/programme files
  • Bombardier project/programme files
  • De Havilland project/programme files
  • ARDE project/programme files
  • MDA project/programme files
  • Internal business/engineering documents (4,324,287 files total)

What the group claims

STELIA North America is an aerospace and defence company specializing in the design, development, and manufacturing of composites. Data from major partner companies including Lockheed Martin, Northrop Grumman, Sikorsky, Leonardo, L3Harris, Airbus Atlantic, Boeing, Bombardier, De Havilland, ARDE, MDA.

The leak post

captured from the group's site
STELIA North America is an aerospace and defence company specializing in the design, development, and manufacturing of composites.10 TB of confidential data!Data from major partner companies, such as: Lockheed Martin, Northrop Grumman, Sikorsky, Leonardo, L3Harris, Airbus Atlantic, Boeing, Bombardier, De Havilland, ARDE, MDA.
Data Catalog: 9,3 Tb, 4 324 287 Files 
All files was uploaded to public access, data hunters, enjoy 
[Southold Town Senior ServicesSouthold Police Department](https://www.southoldtownny.gov)
The Town of Southold, New York provides various government services including forms and permits, online payments, and notifications for residents. Southold Police Department is a company that operates in the Local industry.
Data Catalog: 1,7 Tb, 767 693 Files 
All files was uploaded to public access, data hunters, enjoy 
We will post news about our company hereIf you see news about us, send them to us and we will post it here
Journalists, Recoveries, Fans, fill out the form and you will be contacted for collaboration
Share your contact details and leave a message
We'll get back to you soon
(Or maybe not, depending on who you are)
How you can buy BTC
Buy btc in 15 minutes,e…

Data the group says was taken

  • confidential data

Sources

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.

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Disclosure context

About Rhysida

Rhysida is a ransomware group that emerged in June 2023, operating with primarily financial motivations through targeted attacks against critical infrastructure and public sector organizations. The group's origin and potential state affiliations remain unclear, though they operate independently rather than as a traditional Ransomware-as-a-Service model, with limited public documentation regarding connections to other cybercriminal organizations. Rhysida employs double extortion tactics, typically gaining initial access through compromised VPN credentials and exploiting vulnerable public-facing applications before deploying their ransomware payload and exfiltrating sensitive data prior to encryption. The group has demonstrated a particular focus on healthcare and educational institutions, with notable attacks documented by CISA and FBI advisories highlighting their targeting of hospitals and school districts across multiple countries, resulting in significant operational disruptions to critical services. As of late 2024, Rhysida remains an active threat with continued operations targeting organizations primarily in the United States, Canada, and other Western nations, maintaining their focus on high-value sectors where operational disruption can maximize ransom payment likelihood. The group has been linked to 282 public disclosures across our corpus. First observed on a leak site on June 5, 2023; most recent post June 18, 2026. The operation is currently active.

Timeline of this disclosure

  • May 16, 2026STELIA North America listed by Rhysidaon the group's public leak site
Data size
9.3 TB
Records
4324287 files

Other recent disclosures by Rhysida

Rhysida has been linked to 282 public victims on Darkfield. A sample of the most recent:

See the full Rhysida dossier →

Sector and geography

This disclosure adds to ransomware activity in the Aerospace and Defence sector. Geographically, STELIA North America is reported in Canada, a country with 1,055 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Rhysida means STELIA North America 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.
  • Report the incident to your national CERT, CCCS (Canada), as required for your jurisdiction.
  • Monitor for the data appearing on Rhysida'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.