Was PANSARD & ASSOCIES hit by ransomware?

PANSARD & ASSOCIES was listed by the Medusa ransomware operation (France), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Medusa ransomware group?

Medusa is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the PANSARD & ASSOCIES breach?

Medusa published data attributed to PANSARD & ASSOCIES (~566.2 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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PANSARD & ASSOCIÉS

listed as PANSARD & ASSOCIES · Claimed by Medusa · listed 11 months ago

566.2 GB

Data size

11m

Age

since listed · data leaked

Status timeline

ListedAug 6, 2025
Data leakeddate unknown

At a glance

Group: Medusa
Status: Data leaked
Country: France
Listed on leak site: Aug 6, 2025
Data size: 566.2 GB

About the victim

AI dossier — public-source company profile

PANSARD & ASSOCIÉS is a French accounting and consulting firm headquartered in Roubaix that provides public accounting, auditing, and mergers & acquisitions advisory services. Their consultants hold qualifications from major audit and consulting firms and are affiliated with the American Institute of Certified Public Accountants.

Industry: Professional Services & Accounting
Address: 26 Boulevard Général de Gaulle, 59100 Roubaix, France

Attack summary

Severity: high — Confirmed exfiltration and publication of 566.2 GB of data from a professional services firm handling financial, audit, and M&A records. Likely includes sensitive client financial and business information.

Medusa claims to have exfiltrated 566.2 GB of data from PANSARD & ASSOCIÉS. The group has published the data, indicating a confirmed data breach with no ransom negotiation documented.

high

Data the group says was taken

AI dossier — extracted from the leak post

Financial records
Client accounting files
Audit documentation
M&A transaction files
Business correspondence
Potentially sensitive client data

What the group claims

PANSARD & ASSOCIES has developed three complementary activities to assist companies in their day-to-day operations and facilitate strategic planning relating to enterprise and asset growth and maximization: 1. Public accounting; 2. Auditing; 3. Mergers & Acquisitions and Asset Restructuring. Consultants are dually qualified: they have worked in major audit and consulting firms and have years of experience in the industry. They are affiliated with the American Institute of Certified Public Accountants. company is headquartered in 26 Bd, by General De Gaulle 59100 Roubaix. The total amount of data leakage is 566.2 GB

Sources

Leak posthttp://xfv4jzckytb4g3ckwemcny3ihv4i5p4lqzdpi624cxisu35my5fwi5qd.onion/detail?id=08c524e83b2883cc1ab8089cb4612e54

Source

Indexed 11 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 Medusa

Medusa, also known as MedusaLocker, is a financially motivated ransomware group that emerged in November 2022 and has since compromised 568 known victims across multiple countries. The group's origin and specific affiliations remain unclear from publicly available intelligence, though their operational patterns suggest they function as an independent ransomware operation rather than a documented Ransomware-as-a-Service model. Medusa primarily targets organizations in the United States, United Kingdom, Canada, Italy, and Australia, with a focus on business services, healthcare, manufacturing, and technology sectors, employing typical ransomware tactics including data encryption and likely exfiltration for double extortion purposes, though specific technical methodologies and initial access vectors have not been extensively documented in public threat intelligence reports. While the group has maintained a relatively high victim count since its emergence, detailed information about specific notable campaigns, high-profile victims, or major ransom demands has not been widely reported by major cybersecurity firms or law enforcement agencies. As of current intelligence assessments, Medusa appears to remain active in the threat landscape, continuing to target organizations across their established geographic and sectoral preferences. The group has been linked to 635 public disclosures across our corpus. First observed on a leak site on November 15, 2022; most recent post May 5, 2026. The operation is currently active.

Also tracked as: MedusaLocker, MEDUSA LOCKER.

Timeline of this disclosure

August 6, 2025PANSARD & ASSOCIES listed by Medusaon the group's public leak site

Data size: 566.2 GB

Other recent disclosures by Medusa

Medusa has been linked to 635 public victims on Darkfield. A sample of the most recent:

See the full Medusa dossier →

Sector and geography

Geographically, PANSARD & ASSOCIES is reported in France, a country with 612 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Medusa means PANSARD & ASSOCIES 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, CERT-FR (France), as required for your jurisdiction.
Monitor for the data appearing on Medusa'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.