Was Engineers Contractors Fabricators Inc. (ECF) hit by ransomware?

Engineers Contractors Fabricators Inc. (ECF) was listed by the Interlock 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 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 Engineers Contractors Fabricators Inc. (ECF) breach?

Interlock published data attributed to Engineers Contractors Fabricators Inc. (ECF). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Engineers Contractors Fabricators Inc. (ECF)

Claimed by Interlock · listed 2 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedOct 12, 2026
Data leakeddate unknown

At a glance

Group: Interlock
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Oct 12, 2026

About the victim

AI dossier — public-source company profile

Engineers Contractors Fabricators Inc. (ECF) is a piping and insulation contractor specializing in the design and construction of terminals for the transshipment of liquid hydrocarbons including asphalt, crude oil, and renewable fuels.

Industry: Piping & Insulation Contracting; Hydrocarbon Terminal Design & Construction

Attack summary

Severity: high — Confirmed exfiltration of sensitive business data (pipeline designs, financial records, customer information) affecting critical infrastructure sector (hydrocarbon transshipment); data published without proof count stated but inventory is substantial and operationally sensitive.

The Interlock group claims to have exfiltrated confidential business and operational data including proprietary pipeline designs, CAD drawings, customer lists, pricing models, financial records, and employee information.

high

Data the group says was taken

AI dossier — extracted from the leak post

Proprietary pipeline designs
CAD drawings
Customer lists
Pricing models
Financial data
Employee information
Trade secrets

What the group claims

ECF, Inc., a piping and insulation contractor specializing in the design and construction of terminals for the transshipment of liquid hydrocarbons such as asphalt, crude oil, and renewable fuels, has completely failed to ensure the security of its systems and is unwilling to compromise. Therefore, we are providing you with access to confidential information (proprietary pipeline designs, CAD drawings, customer lists, pricing models, financial data, employee information, and trade secrets), which violates the Complaints and Abuse Act (CFAA) and state civil liability laws and may result in injunctions, damages, fines, mandatory notices, class actions, loss of competitive advantage, and possibly termination of operations.

Sources

Victim sitehttps:ecfinc.net
Leak posthttp://4sip5ueclhoe4ce4xesyf6wqzrhrwblfs45ojaeu75kzhsjdam4cecad.onion/index.php?p=

Source

Indexed 2 hours 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 139 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post October 12, 2026. The operation is currently active.

Timeline of this disclosure

October 12, 2026Engineers Contractors Fabricators Inc. (ECF) listed by Interlock on the group's public leak site

Other recent disclosures by Interlock

Interlock has been linked to 139 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 3,699 disclosures indexed across all operators we track. Geographically, Engineers Contractors Fabricators Inc. (ECF) is reported in United States, a country with 3,176 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Interlock means Engineers Contractors Fabricators Inc. (ECF) 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 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.