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L&S Mechanical

Claimed by Spacebears · listed 1 year ago

16m
Age
since listed · data leaked

Status timeline

  1. ListedMar 20, 2025
  2. Data leakeddate unknown

At a glance

Group
Spacebears
Status
Data leaked
Country
United States
Sector
Construction
Listed on leak site
Mar 20, 2025

About the victim

AI dossier — public-source company profile

L&S Mechanical is a Dallas-based mechanical contractor founded in 1985 that provides plumbing, HVAC, and electrical services for new home construction and residential customers across Texas. Operating from six locations in Dallas, Fort Worth, Houston, San Antonio, and Austin, the company has serviced over 100,000 Texas homes and is owned by Sterling Group.

Industry
Mechanical Contracting & Home Services (HVAC, Plumbing, Electrical)
Address
1101 E. Arapaho Rd. Suite 190, Richardson, TX 75081
Employees
51-200
Founded
1985

Attack summary

Severity: high — Confirmed exfiltration of personal information (PII) of employees and clients at scale, combined with financial and operational business data. No proof files are advertised in the post, but the scope and sensitivity of data types (PII, financials) warrant high severity.

Spacebears claims to have exfiltrated a database, project documentation, drawings, financial documents, and personal information of employees and clients from L&S Mechanical.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Database
  • Project documentation
  • Drawings
  • Financial documents
  • Employee personal information
  • Client personal information

What the group claims

L&S Mechanical began as a Dallas-based contractor in 1985 and has grown over the years to have six locations out of Dallas, Fort Worth, Houston, San Antonio and Austin.  Over the past thirty years, we have become known as the premier provider of new home construction in the plumbing industry. In the last 10 years we have added HVAC and electrical services to now offer the Tri-Trade Solution℠.  The people you have worked with, the quality, and the service our customers have come to expect remain the same, but now we are making it even easier to get things done. Being a single-source provider of mechanical services, our customers are able to more efficiently control their schedules and meet their deadlines. In 2017, we have expanded our brand once again to offering Preventive Maintenance Programs that will allow old and new customers the ability to have honest, quality preventive work done on their homes for years to come.We pride ourselves on having some of the most highly trained technicians in the industry. Technicians participate in an online training platform and have on-site, trade specific trainers that keeps them current on product specs, new industry developments, and providing superior customer service. We also do training in the field, and provide instructor-led training on a regular basis.After delivering over 100,000 homes across the US, we know what builders and contractors are looking for; and we take that knowledge to all the homeowners we serve as well.  From start to closing, we will deliver excellence every stage of the way.The company is in the investment portfolio of STERLING GROUP - https://sterling-group.com/- Database- Project documentation- Drawings- Financial documents- Personal information of employees and clients https://www.lsmech.com/

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 Spacebears

Spacebears is a recently emerged ransomware group first observed in April 2024, operating with apparent financial motivations and demonstrating a broad targeting approach across multiple sectors and geographic regions. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their targeting pattern suggests a professional operation focused on maximizing financial returns rather than geopolitical objectives. With 117 known victims since their emergence, Spacebears has shown particular focus on organizations in the United States, Germany, Spain, Italy, and Canada, with their attacks primarily affecting technology, healthcare, manufacturing, and business services sectors, indicating they likely employ opportunistic targeting rather than sector-specific specialization. Their attack methodology, initial access vectors, and specific technical capabilities have not been extensively documented in public reporting from major cybersecurity firms or law enforcement agencies, limiting detailed analysis of their operational procedures and tools. Due to the group's recent emergence and limited public intelligence reporting, notable high-profile campaigns and specific victim details remain largely undocumented in established threat intelligence channels. The group's current operational status appears active given their recent emergence timeline, though comprehensive analysis is constrained by the lack of detailed public reporting from authoritative cybersecurity sources. The group has been linked to 185 public disclosures across our corpus. First observed on a leak site on April 29, 2024; most recent post July 13, 2026. The operation is currently active.

Also tracked as: space bears.

Timeline of this disclosure

  • March 20, 2025L&S Mechanical listed by Spacebearson the group's public leak site

Other recent disclosures by Spacebears

Spacebears has been linked to 185 public victims on Darkfield. A sample of the most recent:

See the full Spacebears dossier →

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 988 disclosures indexed across all operators we track. Geographically, L&S Mechanical is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Spacebears means L&S Mechanical 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 Spacebears'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.