HackingConstructionConstructionCustomer Data InvolvedFinancial accountHealth (basic)Identity (basic)Government IDPHIMediumContained

Brock Built Homes

bd_9e7f3880ecc58430 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 21, 2025

Filed

Mar 26, 2026

To disclose

22 weeks

Affected

2state residents only

Linked

2 filings

Confidence

64%

Full breach record for Brock Built Homes →

Brock Built Homes experienced a cybersecurity incident between October 17-20, 2025, discovered on October 21, 2025. The incident potentially exposed sensitive personal information including Social Security numbers, driver's license numbers, financial account numbers, and protected health information (medical records, diagnoses, treatments). The company engaged a third-party cybersecurity firm to investigate and is offering 12 months of credit monitoring and fraud assistance to affected individuals. No evidence of misuse has been found.

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Massachusetts clock✗ MA AG >90d22 weeks discovery → filing

Incident timeline

undetected · 4 days

discovery → filing · 22 weeks / 156 days

Oct 17, 2025

Begins

Oct 21, 2025

Discovered

Mar 26, 2026

Filed

This filing is one of 2 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Delaware State AGbd_998704537d3950ca2026-03-17 · +9dCandidate

Name: Brock Built Homes
norm: brock built homes

Name: Brock Built Homes
norm: brock built homes
Industry: Constructionllm

Discovered: Oct 21, 2025
Breach occurred: Oct 17, 2025 – Oct 20, 2025
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 17, 2026
Affected individuals: 2state-resident count only
Data types: Financial accountHealth (basic)Identity (basic)Government IDPHI
Attack vector: Unknown
Threat actor: External

During the incident: Launched an investigation
Engaged a national cybersecurity firm to assist in assessing the scope of the incident
Arranged for Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing proactive fraud assistance
Changes made: Evaluating opportunities to further secure our systems to prevent a similar event from occurring again in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 weeks(156 days from discovery to filing)
Compliance flags: MA AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Delaware State AGMar 17 · first

Massachusetts State AG+9d · this page

Pattern: first filing Mar 17 (DE), last Mar 26 (MA) — a 9-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/2026-464-brock-built-homes/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 26, 2026
Raw hash: 2aac158af1c2b1ae0b0d26e580346521233ff8a87bb8779efdc73f66515ad116

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityBrock Built Homes

Victim entityBrock Built Homes

Incidentdiscovered Oct 21, 2025

Stated responseLaunched an investigation

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov