Was Bwfg.at hit by ransomware?

Bwfg.at was listed by the Cloak ransomware operation (Austria), 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 Bwfg.at breach?

Cloak published data attributed to Bwfg.at (~102 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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BWFG

listed as Bwfg.at · Claimed by Cloak · listed 1 year ago

102 GB

Data size

17m

Age

since listed · data leaked

Status timeline

ListedJan 23, 2025
Data leakeddate unknown

At a glance

Group: Cloak
Status: Data leaked
Country: Austria
Sector: Financial Services
Listed on leak site: Jan 23, 2025
Data size: 102 GB

About the victim

AI dossier — public-source company profile

BWFG is an Austrian financial services company. Limited public information is available; the organization operates under the domain bwfg.at.

Industry: Financial Services

Attack summary

Severity: high — Confirmed exfiltration of 102 GB from a financial services organization; financial sector data is regulated and sensitive. No operational disruption claimed, and proof materials are not quantified in the post.

The Cloak ransomware group claims to have exfiltrated 102 GB of data from BWFG. The post indicates data publication but provides no detail on encryption status or specific data categories.

high

Data the group says was taken

AI dossier — extracted from the leak post

Business records
Financial data

What the group claims

Bwfg.at Country: austria Views: 16 View more /bwfg Public 102GB

Sources

Victim siteBwfg.at

Source

Indexed 1 year 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

January 23, 2025Bwfg.at listed by Cloakon the group's public leak site

Data size: 102 GB

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 Financial Services sector, which has 1,184 disclosures indexed across all operators we track. Geographically, Bwfg.at is reported in Austria, a country with 84 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Cloak means Bwfg.at 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.at (Austria), 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.