Disclosure context

About sinobi

Based on the limited publicly available information, Sinobi appears to be a recently emerged ransomware operation first observed in July 2025, with financial motivations evidenced by their targeting of 268 victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, and there is no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major security research organizations, though their targeting patterns suggest a broad opportunistic approach rather than highly selective operations. The group demonstrates a preference for targeting organizations in the United States, India, United Kingdom, Canada, and Italy, with a focus on manufacturing, healthcare, construction, and technology sectors, suggesting they may exploit common vulnerabilities across these industries rather than deploying sophisticated, sector-specific attack vectors. No major high-profile campaigns or significant law enforcement actions against Sinobi have been publicly reported by CISA, FBI, or established threat intelligence firms. Given the recent emergence timeline and lack of extensive public documentation, the group's current operational status and long-term trajectory remain unclear, though the substantial victim count suggests continued activity as of the last available reporting period. The group has been linked to 274 public disclosures across our corpus. First observed on a leak site on July 5, 2025; most recent post May 8, 2026. The operation is currently active.

Timeline of this disclosure

February 6, 2026Penn Fencing listed by sinobion the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, Penn Fencing 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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Penn Fencing

Claimed by sinobi · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Feb 6, 2026
Data leaked

At a glance

Group: sinobi
Status: Data leaked
Country: United States
Sector: Construction
Listed on leak site: Feb 6, 2026

About the victim

AI dossier — public-source company profile

Penn Fencing, Inc. specializes in the fabrication and sales of fencing, decking, and railing products, serving both residential and commercial clients. They offer professional installation services within 150 miles of Pittsburgh, PA, and ship vinyl products nationwide with a lifetime warranty. Their product focus includes vinyl and aluminum materials.

Industry: Fencing, Decking & Railing Fabrication and Installation
Address: Pittsburgh, PA, United States

Attack summary

Severity: medium — Data is marked as published, indicating confirmed exfiltration and disclosure, but the company is a small regional fencing business with no indication of large-scale regulated PII, medical, financial, or critical infrastructure data at stake, limiting severity below high.

The ransomware group Sinobi claims to have compromised Penn Fencing, Inc. and has published data related to the attack. The disclosed status indicates data has been published, though the specific nature of exfiltrated data and any encryption of systems is not explicitly detailed in the leak post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company business records
Customer information (residential and commercial)
Sales and order data
Installation service records

What the group claims

Penn Fencing, Inc. specializes in the fabrication and sales of fencing, decking, and railing products, offering a wide variety of options both online and in-store. They provide professional installation services within 150 miles of Pittsburgh, PA, and ship vinyl products across the United States with a lifetime warranty. Their intended clients include residential homeowners looking to enhance their outdoor spaces as well as commercial clients needing security solutions. With a commitment to quality, they focus on vinyl and aluminum materials, ensuring durability and low maintenance for their products.

Sources

Victim sitewww.pennfencing.com
Leak posthttp://sinobi6ftrg27d6g4sjdt65malds6cfptlnjyw52rskakqjda6uvb7yd.onion/leaks/6984f9b86387a4c9a257ae9e

Source

Indexed 3 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.