HackingOtherVulnerability ExploitCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Mill Brothers Landscape Group

bd_e60d05b8d3ccd629 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 2, 2026

Filed

Mar 31, 2026

To disclose

29 days

Affected

1state residents only

Linked

3 records

Confidence

66%

Full breach record for Mill Brothers Landscape Group →2 incidents on file

Mill Brothers Landscape Group reported an external system breach (hacking) occurring on December 9, 2025, discovered on March 2, 2026. One Maine resident was affected. The breach involved unauthorized access to personal information including names and government identifiers. Written notification was sent on March 31, 2026, offering 12 months of credit monitoring via Kroll.

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Leak gap clock⏱ Leak >30d29 days discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 83 days

discovery → filing · 29 days

Dec 9, 2025

Begins

Mar 2, 2026

Discovered

Mar 31, 2026

Filed

vs. sector median

2 wks faster

This filing is one of 3 records about the same incident.View merged incident

A leak claim by play about this victim was first seen 84 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteplaybd_8a83d2b2a8ae38a62025-12-08 · +113dVerified by operator

Regulatory filings (1) · sorted by filing gap

Indiana State AGbd_0d1c5ce106a3d6d02026-03-31Verified by operator

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: Mill Brothers Landscape Group
norm: mill brothers landscape
Domain: millbrothers.com
Industry: Otherllm

Discovered: Mar 2, 2026
Breach occurred: Dec 9, 2025
Undetected for: 83 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 31, 2026
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with the Maine Attorney General
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered 12 months of complimentary credit monitoring, fraud consultation, and identity theft restoration through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 days(29 days from discovery to filing)
Compliance flags: Leak >30dME AG ≤30d · 29d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Mar 2, 2026
→ Filed with AG: Mar 31, 2026
29d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Mar 2, 2026 → Filed with AG: Mar 31, 2026	29d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Indiana State AGMar 31 · first

Maine State AGMar 31 · first · 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.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/c3cbb599-b88d-480e-a3f2-0842b4da214f.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 31, 2026
Raw hash: 6fdee9b1f28d8294ecf6457b7b6fca591b1899d361c749221e88927697fe371f

Linked disclosures

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityMill Brothers Landscape Group

Incidentdiscovered Mar 2, 2026

Stated responseSent written notification to affected individuals

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov