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Institut für Forschung und Entwicklung von Sportgeräten (FES)

listed as fessport · Claimed by ZaWoo · listed 22 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedAug 30, 2026
  2. Data leakeddate unknown

At a glance

Group
ZaWoo
Status
Data leaked
Country
Germany
Listed on leak site
Aug 30, 2026

About the victim

AI dossier — public-source company profile

FES is a research and development institute for sports equipment serving German Olympic and Paralympic high-performance sports. Based in Berlin with a branch in Oberhof, it develops sports equipment, measurement systems, and provides scientific support to elite athletes and national sports federations.

Industry
Sports Equipment Research & Development
Address
Tabbertstraße 8, 12459 Berlin, Germany (main office); Kaserne am Rennsteig, Am Grenzadler 1, 98559 Oberhof (branch)

Attack summary

Severity: low — No proof files or substantive data inventory is advertised in the post. The leaked content is inaccessible without authentication, making verification impossible. No operational disruption is stated.

The ZaWoo group claims to have compromised FES and published data. The leak post provides no substantive detail on what data was exfiltrated or whether systems were encrypted; it only shows a login prompt.

low

What the group claims

[Unpublished]

The leak post

captured from the group's site
Please login to view files.
After login, the directory tree will be loaded.
Click to start, or Cancel to abort.

Sources

Source

Indexed 22 hours 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 ZaWoo

ZaWoo is a ransomware group first observed in August 2026 with an apparent financial motivation, having claimed at least 16 known victims across a relatively short operational window. The group's country of origin and potential affiliations with established threat actors or ransomware-as-a-service ecosystems have not been publicly attributed by CISA, the FBI, Mandiant, or other reputable security research organizations at this time, leaving its operational structure largely uncharacterized in open-source intelligence. Based on available victimology data, ZaWoo has demonstrated a targeting pattern favoring the Technology, Manufacturing, and Professional Services sectors, with additional intrusions recorded against Retail and E-Commerce entities, suggesting opportunistic selection of mid-market organizations likely to possess both sensitive data and financial resources sufficient to meet ransom demands. The group's geographic targeting has spanned Germany, Canada, Austria, Brazil, and the United States, indicating either a broad opportunistic reach or the use of access brokers supplying footholds across multiple regions. No specific tools, initial access vectors, encryption methods, or extortion tactics have been publicly documented for ZaWoo by authoritative sources, and no major high-profile campaigns, record ransom demands, or law enforcement actions against the group have been publicly recorded to date. Given its recent emergence and limited public profile, ZaWoo should be regarded as an emerging threat actor warranting continued monitoring, though definitive technical or attribution assessments remain pending further research and disclosure. The group has been linked to 16 public disclosures across our corpus. First observed on a leak site on August 30, 2026. The operation is currently active.

Timeline of this disclosure

  • August 30, 2026fessport listed by ZaWooon the group's public leak site

Other recent disclosures by ZaWoo

ZaWoo has been linked to 16 public victims on Darkfield. A sample of the most recent:

See the full ZaWoo dossier →

Sector and geography

Geographically, fessport is reported in Germany, a country with 393 ransomware disclosures in our corpus.

If your organisation is affected

A listing by ZaWoo means fessport 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 ZaWoo'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.