Was Western Slope Iron & Supply hit by ransomware?

Western Slope Iron & Supply was listed by the sinobi ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the sinobi ransomware group?

sinobi is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Western Slope Iron & Supply breach?

sinobi published data attributed to Western Slope Iron & Supply. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Western Slope Iron & Supply

Claimed by Sinobi · listed 5 months ago

Age

since listed · data leaked

Status timeline

ListedFeb 5, 2026
Data leakeddate unknown

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 5 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.

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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

Other recent disclosures by sinobi

sinobi has been linked to 274 public victims on Darkfield. A sample of the most recent:

See the full sinobi dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,681 disclosures indexed across all operators we track. Geographically, Western Slope Iron & Supply is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by sinobi means Western Slope Iron & Supply appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on sinobi's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.