Disclosure context

About Dataleak

Dataleak is a relatively obscure ransomware group that emerged in December 2022 with apparent financial motivations, operating with a limited scope compared to major ransomware families. The group's origin and potential affiliations remain unclear based on publicly available threat intelligence, and there is insufficient documentation to determine whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and specific technical capabilities have not been extensively documented by major cybersecurity firms or government agencies, though their targeting pattern suggests a focused approach on financial sector organizations. The group has primarily targeted victims in Germany with a concentration on financial services organizations, having compromised at least six known victims since their emergence. Given the limited public reporting and documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, the current operational status of Dataleak remains uncertain, with their relatively small victim count and narrow geographic focus suggesting either limited capabilities or highly selective targeting criteria. The group has been linked to 6 public disclosures across our corpus. First observed on a leak site on December 2, 2022. The operation is currently inactive.

Timeline of this disclosure

December 2, 2022grantweber.com listed by Dataleakon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Real Estate sector. Geographically, grantweber.com is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

← All victims

Grant & Weber

listed as grantweber.com · Claimed by Dataleak · listed 3 years ago

42m

Age

since listed · data leaked

Status timeline

Listed
Dec 2, 2022
Data leaked

At a glance

Group: Dataleak
Status: Data leaked
Country: United States
Sector: Real Estate
Listed on leak site: Dec 2, 2022

About the victim

AI dossier — public-source company profile

Grant & Weber is a US-based revenue cycle and receivables management firm with over 40 years of experience serving healthcare and financial services clients. The company provides services including insurance billing, self-pay collections, third-party liability recovery, workers' compensation recovery, and pre-charge-off account management for credit unions and financial institutions. It operates analytics-driven collection workflows and is a long-standing Temenos partner.

Industry: Revenue Cycle Management & Debt Collections (Healthcare & Financial Services)

Attack summary

Severity: critical — Grant & Weber handles regulated healthcare billing data (HIPAA-covered) and financial account/collections data (FCRA/GLBA-covered) at scale for multiple institutional clients, meaning a confirmed data publication likely exposes large volumes of sensitive PII, medical, and financial records belonging to patients and debtors.

The group 'Dataleak' claims a data publication event against Grant & Weber; no specific details about encryption or exfiltration methods are captured in the leak post, but the disclosure status is listed as data_published.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient billing records
Insurance claims data
Self-pay account information
Financial institution account data
Workers' compensation recovery files
Third-party liability records
Client contact information

Sources

Victim sitegrantweber.com

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.