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Fock & Partner mbB Steuerberatungsgesellschaft

listed as GPS Grothkopp und Partner · Claimed by Qilin · listed 8 days ago

8d
Age
since listed · data leaked

Status timeline

  1. ListedAug 27, 2026
  2. Data leakeddate unknown

At a glance

Group
Qilin
Status
Data leaked
Country
Germany
Sector
Professional Services
Listed on leak site
Aug 27, 2026

About the victim

AI dossier — public-source company profile

Fock & Partner mbB is a German tax consulting and accounting firm (Steuerberatungsgesellschaft) operating at three locations in Mölln, Ratzeburg, and Rehna in Schleswig-Holstein. They provide tax advice, bookkeeping, payroll accounting, business consulting, and tax planning services to regional and national clients.

Industry
Tax Consulting & Accounting Services
Address
Brauerstraße 7, 23879 Mölln, Germany

Attack summary

Severity: medium — Data has been published by the ransomware operator (disclosed_status = data_published), indicating confirmed exfiltration. However, without access to the full leak post or proof files, the scale and sensitivity of the data cannot be verified. Tax consulting firms typically handle sensitive financial and personal client data, but the absence of detailed claims or proof counts prevents a higher severity assessment.

The qilin group claims to have attacked Fock & Partner mbB and published data from the incident. No specific details about the nature of the attack (encryption, exfiltration, or both) or the data categories involved are provided in the available leak post.

medium

What the group claims

N/A

Sources

Source

Indexed 8 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.

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Disclosure context

About Qilin

Qilin is a ransomware group that emerged in October 2022, operating with primarily financial motivations through targeted attacks against organizations across multiple sectors. The group appears to operate independently with limited public information available regarding their specific country of origin or affiliations to other ransomware families. Qilin employs double extortion tactics, typically exfiltrating sensitive data before deploying their encryption payload, though specific details about their initial access vectors and technical tools remain less documented in public security research. The group has demonstrated a broad targeting approach, with their 1645 known victims spanning multiple countries including the United States, France, Canada, United Kingdom, and Germany, with particular focus on manufacturing, technology, healthcare, and business services sectors. Based on available intelligence reporting, Qilin remains an active threat as of recent assessments, continuing their ransomware operations without significant reported law enforcement disruption. The group has been linked to 2,281 public disclosures across our corpus. First observed on a leak site on October 8, 2022; most recent post September 4, 2026. The operation is currently active.

Timeline of this disclosure

  • August 27, 2026GPS Grothkopp und Partner listed by Qilinon the group's public leak site

Other recent disclosures by Qilin

Qilin has been linked to 2,281 public victims on Darkfield. A sample of the most recent:

See the full Qilin dossier →

Sector and geography

This disclosure adds to ransomware activity in the Professional Services sector, which has 17 disclosures indexed across all operators we track. Geographically, GPS Grothkopp und Partner is reported in Germany, a country with 393 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Qilin means GPS Grothkopp und Partner 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-Bund (Germany), as required for your jurisdiction.
  • Monitor for the data appearing on Qilin'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.