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 109 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post May 11, 2026. The operation is currently active.

Timeline of this disclosure

March 11, 2026Elliott-Lewis listed by Interlockon 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, Elliott-Lewis 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

← All victims

Elliott-Lewis

Claimed by Interlock · listed 2 months ago

Age

since listed · data leaked

Status timeline

Listed
Mar 11, 2026
Data leaked

At a glance

Group: Interlock
Status: Data leaked
Country: United States
Sector: Construction
Listed on leak site: Mar 11, 2026

About the victim

AI dossier — public-source company profile

Elliott-Lewis Corporation, founded in 1905, provides comprehensive mechanical and electrical contracting services including maintenance, repair and operations, engineering, design, installation, and energy management. The company also operates a Facilities Management division offering on-site operations management to clients across the United States. It serves a broad base of commercial and institutional customers.

Industry: Mechanical, Electrical & Facilities Engineering Services
Founded: 1905

Attack summary

Severity: high — Data is confirmed exfiltrated and published, encompassing PII of both customers and employees alongside sensitive business contracts and project data; the scale of a company operating since 1905 with a broad client base suggests significant volume of affected records.

The Interlock ransomware group claims to have exfiltrated a large database containing confidential contracts and project records, as well as personal customer and employee data from Elliott-Lewis, with the data now published.

high

Data the group says was taken

AI dossier — extracted from the leak post

Confidential contracts
Project records
Customer personal data
Employee personal data

What the group claims

Since 1905, Elliott-Lewis Corporate has provided comprehensive solutions for maintenance, repair and operations, engineering, design, installation, and energy consumption. In addition, Elliott-Lewis' Facilities Management team provides individual on-site operations management but does not provide security to its customers, resulting in a large database of confidential contracts and projects, as well as personal customer and employee data.

Sources

Victim sitehttps:elliottlewis.com
Leak posthttp://x2ol75zago3z2nrp7lnmbcwoq3okiexuwi456oe6jqurbprg6lljz3yd.onion/index.php?p=

Source

Indexed 2 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.