Disclosure context

About Lorenz

Lorenz is a ransomware group that emerged in January 2020 and operates primarily for financial gain, having claimed approximately 78 victims across multiple sectors. The group's origin and specific affiliations remain largely undocumented by major threat intelligence organizations, though their targeting patterns suggest a focus on English-speaking nations including the United States, United Kingdom, and Australia. Lorenz primarily targets healthcare, finance, automotive, construction, and retail sectors, suggesting they may opportunistically attack organizations with valuable data and limited security resources rather than following a specific geopolitical agenda. While detailed technical analysis of their attack methodology has not been extensively published by major security firms like Mandiant or government agencies such as CISA, the group appears to follow typical ransomware deployment patterns common to financially-motivated cybercriminal organizations. Public documentation of specific high-profile campaigns, notable victims, or significant law enforcement actions against Lorenz remains limited in open-source intelligence reporting. Based on available victim data extending beyond 2020, the group appears to have maintained some level of operational activity, though comprehensive assessments of their current operational status have not been widely published by authoritative sources in the threat intelligence community. The group has been linked to 78 public disclosures across our corpus. First observed on a leak site on January 12, 2020; most recent post December 11, 2023. The operation is currently inactive.

Timeline of this disclosure

December 11, 2023Bayer Heritage Federal Credit Union listed by Lorenzon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Finance sector, which has 92 disclosures indexed across all operators we track. Geographically, Bayer Heritage Federal Credit Union 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

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Bayer Heritage Federal Credit Union

Claimed by Lorenz · listed 2 years ago

29m

Age

since listed · data leaked

Status timeline

Listed
Dec 11, 2023
Data leaked

At a glance

Group: Lorenz
Status: Data leaked
Country: United States
Sector: Finance
Listed on leak site: Dec 11, 2023

About the victim

AI dossier — public-source company profile

Bayer Heritage Federal Credit Union (bayerhfcu.org) is a federally chartered credit union based in the United States, likely serving employees and communities affiliated with Bayer Corporation or a related heritage group. As a credit union, it provides retail financial services including savings accounts, loans, and other member banking products. No further operational details were available from the public site excerpt.

Industry: Credit Union & Retail Banking

Attack summary

Severity: critical — A federal credit union holds highly regulated financial and personal data (PII, account details, loan records) subject to NCUA, GLBA, and other regulations. Data_published status confirms exfiltration and public release of likely sensitive member financial information at scale, warranting a critical severity rating.

The Lorenz ransomware group has listed Bayer Heritage Federal Credit Union with a disclosed status of 'data_published', indicating data was exfiltrated and subsequently published. No specific details about encryption or the precise nature of published data were captured in the leak post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Member financial records
Personally identifiable information (PII)
Account data
Loan records
Internal banking documents

Sources

Victim sitebayerhfcu.org

Source

Indexed 2 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.