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 5, 2026Western Slope Iron & Supply listed by sinobion the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Western Slope Iron & Supply 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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Western Slope Iron & Supply

Claimed by sinobi · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Feb 5, 2026
Data leaked

At a glance

Group: sinobi
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Feb 5, 2026

About the victim

AI dossier — public-source company profile

Western Slope Iron & Supply, Inc. is a certified steel fabricator based in Grand Junction, Colorado, operating since 1974. The company specializes in the fabrication of structural and miscellaneous steel for commercial, industrial, residential, and governmental projects across the Western United States. They also serve as a Hilti distributor, supplying steel parts and related materials.

Industry: Structural & Miscellaneous Steel Fabrication
Address: Grand Junction, Colorado, United States
Founded: 1974

Attack summary

Severity: medium — Data has been published (disclosed status: data_published), confirming exfiltration occurred, but the leak post provides no detail on the volume, type, or sensitivity of the data exposed, and no proof files or data inventory are described.

The ransomware group Sinobi claims an attack on Western Slope Iron & Supply with a disclosed status of data_published, indicating that data has been exfiltrated and published. The specific types of data exposed and the scale of the breach have not been detailed in the leak post.

medium

What the group claims

Western Slope Iron & Supply, Inc. is a certified steel fabricator operating since 1974, based in Grand Junction, Colorado. The company specializes in the fabrication of structural and miscellaneous steel for high-end commercial, industrial, residential, and governmental projects throughout the Western United States. Additionally, they serve as a Hilti distributor, offering a variety of steel parts and supplies for diverse applications. Their commitment to customer service and proactive project management has garnered positive feedback from clients across various sectors.

Sources

Leak posthttp://sinobi6ftrg27d6g4sjdt65malds6cfptlnjyw52rskakqjda6uvb7yd.onion/leaks/6984ed316387a4c9a2572660

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.