Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
PR
Ransomware Victim Technology

ProSim Aviation Research

Ransomware attack by Direwolf · Disclosed August 21, 2026 · 🇫🇷 France

prosim.aero

Date Disclosed
Aug 21, 2026
2026
Threat Group
Direwolf
125 total victims
Country
🇫🇷 France
Industry
Technology

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Direwolf. Figures and technique mappings are quoted from the source data, not inferred.

ProSim Aviation Research, based in France and active in the Technology sector, was listed on the dark web leak site Direwolf on 21 August 2026.

About the Direwolf group

Dire Wolf is a sophisticated human-operated ransomware group first documented in May 2025, written in Golang using Curve25519/ChaCha20 encryption, targeting manufacturing and technology sectors across 13+ countries with ransoms up to $500,000, operated by a tight core team rather than a broad affiliate program. Direwolf has listed 75 victims since April 2025.

Incident Analysis

ProSim Aviation Research was targeted by Direwolf ransomware, one of the most active ransomware groups in our database with 125 confirmed victims globally. The attack was disclosed on August 21, 2026, when ProSim Aviation Research appeared on the group's dark web leak site.

ProSim Aviation Research is based in France , operating in the Technology sector. France ranks #6 globally for ransomware attacks, with 517 victims in our database.

Sector context: Technology companies hold intellectual property, customer data, and source code — all highly valuable assets. A successful ransomware attack can also put downstream customers at risk through supply chain exposure.

Direwolf typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 6, 2026 14:00 UTC.

Frequently Asked Questions

Was ProSim Aviation Research attacked by ransomware?

Yes. ProSim Aviation Research was listed as a victim of the Direwolf ransomware group on August 21, 2026. The organisation is based in France and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked ProSim Aviation Research?

ProSim Aviation Research was attacked by Direwolf ransomware. Direwolf is one of the most active ransomware groups, having claimed 125 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the ProSim Aviation Research ransomware attack occur?

The ransomware attack on ProSim Aviation Research was disclosed on August 21, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the ProSim Aviation Research ransomware attack?

The specific data stolen from ProSim Aviation Research has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Technology organisation, ProSim Aviation Research likely held source code, intellectual property, and customer data.

How can organisations protect against Direwolf attacks?

To defend against Direwolf and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.