HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)Government IDFinancialPHIHealth (basic)MediumContained

Hartshorne Plunkard Architecture LLC

bd_9603c359585e9d70 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 11, 2025

Filed

Sep 11, 2025

To disclose

13 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

65%

Full breach record for Hartshorne Plunkard Architecture LLC →

Hartshorne Plunkard Architecture LLC notified consumers of a data breach discovered on June 11, 2025, where an unauthorized actor accessed their server on June 11-12, 2025. The incident potentially exposed names, Social Security numbers, driver's license numbers, state IDs, passports, financial information, and medical information. The company offered 12 months of credit monitoring services.

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Vermont clock✗ VT AG >45 bday13 weeks discovery → filing

Incident timeline

discovery → filing · 13 weeks / 92 days

Jun 11, 2025

Begins

Jun 11, 2025

Discovered

Sep 11, 2025

Filed

vs. sector median

6 wks faster

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

Indiana State AGbd_b631d1453f0e4e662025-09-03 · +8dVerified

Name: Hartshorne Plunkard Architecture LLC
norm: hartshorne plunkard architecture

Name: Hartshorne Plunkard Architecture LLC
norm: hartshorne plunkard architecture
Industry: Professional Servicesllm

Discovered: Jun 11, 2025
Breach occurred: Jun 11, 2025 – Jun 12, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 21, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancialPHIHealth (basic)
Data elements: Social Security numberMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Performed a review of the files stored on our server for the presence of sensitive personal information
Providing access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no cost
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(92 days from discovery to filing)
Compliance flags: VT AG >45 bday
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 ↗

Indiana State AGSep 3 · first

Vermont State AG+8d · this page

Pattern: first filing Sep 3 (IN), last Sep 11 (VT) — a 8-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://ago.vermont.gov/document/2025-09-11-hartshorne-plunkard-architecture-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 11, 2025
Raw hash: 7d2973bd5e7f01601ed77e64e49c5d94cc25af5bf6fac7b76d961518cb9eb71b

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityHartshorne Plunkard Architecture LLC

Victim entityHartshorne Plunkard Architecture LLC

Incidentdiscovered Jun 11, 2025

Stated responsePerformed a review of the files stored on our server for the presence of sensitive personal information

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov