Was BONI-PASSAU.DE hit by ransomware?

BONI-PASSAU.DE was listed by the Cloak ransomware operation (Germany), 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 Cloak ransomware group?

Cloak 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 BONI-PASSAU.DE breach?

Cloak published data attributed to BONI-PASSAU.DE. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Boni Passau

listed as BONI-PASSAU.DE · Claimed by Cloak · listed 3 years ago

35m

Age

since listed · data leaked

Status timeline

ListedAug 24, 2023
Data leakeddate unknown

At a glance

Group: Cloak
Status: Data leaked
Country: Germany
Sector: Retail & Consumer
Listed on leak site: Aug 24, 2023

About the victim

AI dossier — public-source company profile

Boni Passau appears to be a retail or consumer-goods business operating in Passau, Bavaria, Germany, identifiable from its domain boni-passau.de. The specific nature of its products or services cannot be confirmed as no public site content was available. It is likely a locally or regionally focused retail operation based in the Passau area.

Industry: Retail & Consumer Goods
Address: Passau, Bavaria, Germany

Attack summary

Severity: medium — Data is listed as published by the group, indicating confirmed exfiltration, but no details on data volume, sensitivity, or type are provided, and no regulated data categories are confirmed, limiting severity to medium.

The Cloak ransomware group has claimed an attack on Boni Passau and listed the victim with a disclosed/data-published status, suggesting data has been exfiltrated and potentially published. No specific data size or ransom amount was stated in the post.

medium

What the group claims

Country: germany

Sources

Victim siteboni-passau.de

Source

Indexed 3 years 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 Cloak

Cloak is a relatively new ransomware group that emerged in August 2023, operating with primarily financial motivations and demonstrating a broad international targeting scope with 162 documented victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, though their operational patterns suggest they may operate independently rather than as part of a larger ransomware-as-a-service ecosystem. Limited public documentation exists regarding their specific attack methodologies, encryption techniques, or data exfiltration practices, though their targeting patterns indicate sophisticated capabilities to compromise organizations across diverse sectors including business services, technology, healthcare, and manufacturing. The group has demonstrated a preference for targeting victims in English-speaking countries and Western Europe, with the United States, Germany, United Kingdom, Canada, and Italy representing their primary geographic focus areas. Cloak appears to remain active as of current reporting, though the relative scarcity of detailed public analysis from major threat intelligence firms suggests either operational security effectiveness or a lower profile compared to more established ransomware operations. The group has been linked to 166 public disclosures across our corpus. First observed on a leak site on August 24, 2023; most recent post June 18, 2026. The operation is currently active.

Timeline of this disclosure

August 24, 2023BONI-PASSAU.DE listed by Cloakon the group's public leak site

Other recent disclosures by Cloak

Cloak has been linked to 166 public victims on Darkfield. A sample of the most recent:

See the full Cloak dossier →

Sector and geography

This disclosure adds to ransomware activity in the Retail & Consumer sector, which has 157 disclosures indexed across all operators we track. Geographically, BONI-PASSAU.DE is reported in Germany, a country with 926 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Cloak means BONI-PASSAU.DE 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 Cloak'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.