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

April 5, 2023Tarolli, Sundheim, Covell & Tummino LLP listed by Lorenzon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Legal sector, which has 21 disclosures indexed across all operators we track. Geographically, Tarolli, Sundheim, Covell & Tummino LLP is reported in United Kingdom, a country with 902 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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Tarolli, Sundheim, Covell & Tummino LLP

Claimed by Lorenz · listed 3 years ago

38m

Age

since listed · data leaked

Status timeline

Listed
Apr 5, 2023
Data leaked

At a glance

Group: Lorenz
Status: Data leaked
Country: United Kingdom
Sector: Legal
Listed on leak site: Apr 5, 2023

About the victim

AI dossier — public-source company profile

Tarolli, Sundheim, Covell & Tummino LLP is an intellectual property law firm headquartered in Cleveland, Ohio. The firm specializes in patent prosecution and trademark matters across technology areas including electrical/computer, biomedical, mechanical, and biotechnology/chemical fields. It has been ranked among the top 10 patent law firms by Patent Bots and recognized by U.S. News & World Report as a 2024 Best Company to Work For.

Industry: Intellectual Property Law
Address: 950 Main Avenue, Suite 710, Cleveland, Ohio 44113, USA

Attack summary

Severity: high — The status is data_published, meaning exfiltrated data has been released. As an IP law firm, the stolen data likely includes confidential attorney-client privileged communications, sensitive patent applications, and proprietary client business information, representing significant harm even absent confirmed PII at regulated scale.

The Lorenz ransomware group has listed Tarolli, Sundheim, Covell & Tummino LLP with a disclosed status of data_published, indicating that data exfiltrated from the firm has been published. No leak post details, ransom amount, or data size were captured.

high

Data the group says was taken

AI dossier — extracted from the leak post

Client legal files
Patent prosecution records
Attorney-client communications
Trademark documentation
Internal business records

Sources

Victim sitetarolli.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.