HackingConstructionConstructionData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

L&S MECHANICAL ACQUISITION, LLC

bd_64b998925bc774db · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Mar 6, 2026

To disclose

—

Affected

Not disclosed

Linked

5 filings

Confidence

66%

Full breach record for L&S MECHANICAL ACQUISITION, LLC →2 incidents on file

L&S Mechanical experienced unauthorized access to its network between February 5, 2025, and March 10, 2025. The investigation concluded on February 16, 2026, confirming that personal information, including full names and potentially Social Security numbers, was removed from the network. The company engaged outside cybersecurity professionals and is offering credit monitoring to affected individuals. No specific discovery date for the initial awareness was provided in the notice, only the occurrence window and investigation conclusion.

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Leak gap clock✗ Leak >180d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline

Feb 5, 2025

Begins

Mar 6, 2026

Filed

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Sitespacebearsbd_0a55b47f46c4e4e82025-04-03 · +337dVerified by operator
Leak Sitespacebearsbd_f57dd14628165b652025-03-18 · +353dVerified by operator

Regulatory filings (2) · sorted by filing gap

Texas State AGbd_b975560ca8db531b2026-03-06Verified
Nebraska State AGbd_0f73549aa2ad1d1e2026-03-05 · +1dVerified by operator

Name: L&S MECHANICAL ACQUISITION, LLC
norm: l s mechanical acquisition
Domain: lsmech.com

Name: L&S MECHANICAL ACQUISITION, LLC
norm: l s mechanical acquisition
Domain: lsmech.com
Industry: Constructionllm

Discovered: —
Breach occurred: Feb 5, 2025 – Mar 10, 2025
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Launched an investigation in consultation with outside cybersecurity professionals
Offering a complimentary membership in Equifax Credit Watch Gold
Set up a dedicated and confidential toll-free response line
Changes made: Continually evaluate and modify practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >180d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Nebraska State AGMar 5 · first

Texas State AG+1d

Massachusetts State AG+1d · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.mass.gov/doc/2026-335-ls-mechanical/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 6, 2026
Raw hash: 96a4519cdc113635cdc6d8c8d30fb3defc4dd7c827eb7112ef18ac64e0e3b414

Linked disclosures

Ransomware claims (2)

Regulatory filings (2) · sorted by filing gap

Reporting entityL&S MECHANICAL ACQUISITION, LLC

Victim entityL&S MECHANICAL ACQUISITION, LLC

IncidentUnknown

Stated responseLaunched an investigation in consultation with outside cybersecurity professionals

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov