Disclosure context

About blackshrantac

Based on available intelligence, blackshrantac is a recently emerged ransomware group first observed in September 2025, operating with apparent financial motivations and demonstrating a geographically diverse targeting approach across multiple continents. The group has victimized 43 known entities primarily across India, the United States, Turkey, Peru, and Australia, suggesting either a broad opportunistic targeting strategy or access to varied initial compromise vectors that span different regions. Their sector targeting shows a preference for manufacturing, technology, financial services, and public sector organizations, though a significant portion of their attacks have occurred against entities in unspecified sectors, indicating either incomplete intelligence gathering or deliberate obfuscation of their targeting patterns. Due to the group's recent emergence and relatively limited public exposure, detailed information about their specific attack methodologies, tooling, encryption techniques, data exfiltration practices, or operational structure remains largely undocumented by major threat intelligence organizations and law enforcement agencies. The group's current operational status appears to be active given their recent first observation date, though the limited intelligence available suggests they may be either a smaller operation or have successfully maintained a lower profile compared to more established ransomware groups. The group has been linked to 43 public disclosures across our corpus. First observed on a leak site on September 17, 2025; most recent post January 20, 2026. The operation is currently active.

Timeline of this disclosure

October 31, 2025TENAX Law Group PC listed by blackshrantacon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, TENAX Law Group PC 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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TENAX Law Group PC

Claimed by blackshrantac · listed 7 months ago

Age

since listed · data leaked

Status timeline

Listed
Oct 31, 2025
Data leaked

At a glance

Group: blackshrantac
Status: Data leaked
Country: United States
Sector: Business Services
Listed on leak site: Oct 31, 2025

About the victim

AI dossier — public-source company profile

TENAX Law Group P.C. is a Bay Area-based law firm with its primary office in Point Richmond, California, and additional locations in Fairfield, Larkspur, and San Francisco. The firm serves individuals and businesses across practice areas including civil litigation, business law, real estate and landlord-tenant law, bankruptcy, wills and trusts, employment law, and personal injury. The firm emphasizes affordable, client-focused legal services and long-term client relationships.

Industry: Legal Services
Address: Point Richmond, California (primary office); additional locations in Fairfield, Larkspur, and San Francisco, CA

Attack summary

Severity: critical — As a law firm, TENAX Law Group would hold highly sensitive attorney-client privileged communications, PII at scale, financial records, estate and probate documents, and litigation strategies. Data published status confirms exfiltration and public release of this regulated and sensitive data, meeting the critical threshold.

The ransomware group blackshrantac claims to have published data belonging to TENAX Law Group P.C., with the disclosure status listed as 'data_published', indicating exfiltration and public release of the firm's data. No specific ransom demand or data volume was stated in the post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Client legal files
Attorney-client communications
Business records
Estate planning documents
Real estate transaction records
Employment law case files
Bankruptcy filings
Personal injury case records
Contact and personally identifiable information

Original description

AI-summarised, not from the leak post

TENAX Law Group, P.C. is a U.S.-based law firm that specializes in numerous sectors. Areas of practice include business law, estate planning & trusts, real estate law, civil litigation, among others. It is committed to providing high-quality legal services & personalized solutions to both individuals and businesses. Located in Point Richmond, California, they're renowned for maintaining professional and cost-effective legal solutions.

Sources

Victim sitetenaxlawgroup.com
Leak posthttp://jvkpexgkuaw5toiph7fbgucycvnafaqmfvakymfh5pdxepvahw3xryqd.onion/targets/15

Source

Indexed 7 months 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.