Was Doman Building Materials Group hit by ransomware?

Doman Building Materials Group was listed by the Interlock ransomware operation (Canada), 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 Interlock ransomware group?

Interlock 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 Doman Building Materials Group breach?

Interlock published data attributed to Doman Building Materials Group. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Doman Building Materials Group

Claimed by Interlock · listed 1 year ago

15m

Age

since listed · data leaked

Status timeline

ListedApr 7, 2025
Data leakeddate unknown

At a glance

Group: Interlock
Status: Data leaked
Country: Canada
Sector: Manufacturing
Listed on leak site: Apr 7, 2025

About the victim

AI dossier — public-source company profile

Doman Building Materials Group is a vertically integrated global supplier of building materials headquartered in Vancouver, BC, Canada. The company operates distribution centers, wood processing plants, specialty sawmills, and private forest lands across North America, supplying products ranging from construction lumber to engineered wood and next-generation building materials to retailers. Traded on the Toronto Stock Exchange under symbol DBM.

Industry: Building Materials & Lumber Distribution
Address: Vancouver, British Columbia, Canada

Attack summary

Severity: medium — Data has been published by the threat actor (disclosed status confirmed), but the truncated leak post provides no details on data types, volume, or sensitivity. No operational disruption claimed. Moderate severity assigned due to confirmed publication without evidence of particularly sensitive data categories.

The Interlock group claims to have conducted an attack on Doman Building Materials Group and published data. No specific details on encryption, exfiltration method, or data categories are provided in the truncated leak post.

medium

What the group claims

Doman Building Materials Group is a vertically integrated global building materials group. They supply products to retailers across North America. From basic lumber to next generation products, DOMAN optimizes the supply of a wide range of quality building materials. Headquartered in Vancouver, British Columbia, Canada, we operate distribution centers, wood processing plants, specialty sawmills, planers, wood cleaning facilities across North America and private forest lands. This distinctive vertical model allows us to maintain close relationships with the supply chain, ensuring retailers can purchase high-quality products at highly competitive prices. Doman Building Materials Group Ltd. is traded on the Toronto Stock Exchange under the symbol DBM

Sources

Source

Indexed 1 year 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 Interlock

Interlock is a recently emerged ransomware group that began operations in October 2024, primarily motivated by financial gain through extortion activities targeting organizations across multiple sectors. The group's country of origin and potential affiliations remain unclear given their recent emergence, with insufficient public documentation to determine whether they operate as an independent entity or under a Ransomware-as-a-Service model. Limited public information exists regarding their specific attack methodologies, initial access vectors, or encryption techniques, as major cybersecurity firms and law enforcement agencies have not yet published comprehensive technical analyses of their operations. Since beginning operations, Interlock has reportedly compromised approximately 100 victims, with their targeting primarily focused on organizations in English-speaking countries including the United States, Canada, United Kingdom, and Australia, as well as Italy, while demonstrating a preference for attacking education, manufacturing, healthcare, and public sector entities. The group remains active as of late 2024, though comprehensive threat intelligence profiles from established security research organizations have not yet been published due to the group's recent emergence in the threat landscape. The group has been linked to 114 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post July 10, 2026. The operation is currently active.

Timeline of this disclosure

April 7, 2025Doman Building Materials Group listed by Interlockon the group's public leak site

Other recent disclosures by Interlock

Interlock has been linked to 114 public victims on Darkfield. A sample of the most recent:

See the full Interlock 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, Doman Building Materials Group is reported in Canada, a country with 1,055 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Interlock means Doman Building Materials Group 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, CCCS (Canada), as required for your jurisdiction.
Monitor for the data appearing on Interlock'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.