HackingOtherStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Platt Builders

bd_96875a270bce8a12 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 27, 2023

Filed

Apr 11, 2024

To disclose

19 weeks

Affected

20state residents only

Linked

3 filings

Confidence

66%

Full breach record for Platt Builders →

Platt Builders notified the NH Attorney General of unauthorized network access occurring on or around Nov 27, 2023. Investigation concluded Mar 24, 2024, revealing limited personal info (names, SSNs) removed. ~20 NH residents affected. Credit monitoring offered. Notification sent Apr 5, 2024.

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Incident timeline

discovery → filing · 19 weeks / 136 days

Nov 27, 2023

Begins

Nov 27, 2023

Discovered

Apr 11, 2024

Filed

vs. sector median

+11 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_71b63855c9248d182024-04-08 · +3dVerified
Maine State AGbd_304be3ef098a62c72024-04-07 · +4dCandidate

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: Platt Builders
norm: platt builders
Industry: Otherllm

Discovered: Nov 27, 2023
Breach occurred: Nov 27, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 5, 2024
Affected individuals: 20state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the Office of the Attorney General of New Hampshire
Initial access: valid_credentials

During the incident: Launched an investigation in consultation with outside cybersecurity professionals
Providing the affected residents with written notification of this incident
Offering the affected residents whose Social Security numbers were impacted complimentary memberships with a credit monitoring service
Advising the affected residents about the process for placing fraud alerts and/or security freezes on their credit files
Changes made: Continually evaluates and modifies its practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(136 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Maine State AGApr 7 · first

Massachusetts State AG+1d

New Hampshire State AG+4d · 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://mm.nh.gov/files/uploads/doj/remote-docs/platt-builders-20240411.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 11, 2024
Raw hash: 66285e323c4e2450c055ab95db8719fa73e492d19abecc083c8bdf1cdbadb503

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityPlatt Builders

Incidentdiscovered Nov 27, 2023

Stated responseLaunched an investigation in consultation with outside cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov