HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Harris, Burnett, Arend & Schmiesing CPA

bd_9ff607749d60599c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 2, 2025

Filed

Aug 18, 2025

To disclose

7 weeks

Affected

1state residents only

Linked

5 filings

Confidence

68%

Full breach record for Harris, Burnett, Arend & Schmiesing CPA →

Harris, Burnett, Arend & Schmiesing, CPA reported a data security incident to the New Hampshire Attorney General on August 11, 2025. The firm discovered suspicious activity on July 2, 2025, involving unauthorized access to one New Hampshire resident's information, including names, SSNs, and financial data. The investigation has concluded, and the firm has notified the affected individual, offering 12 months of IDX identity protection services.

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Incident timeline

discovery → filing · 7 weeks / 47 days

Jul 2, 2025

Discovered

Aug 18, 2025

Filed

vs. sector median

12 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_2b6a41aee34831c12025-08-11 · +7dVerified
Maine State AGbd_d9d87e937183103b2025-08-11 · +7dCandidate
Indiana State AGbd_f3cc1f01803d4f072025-08-07 · +11dVerified
Nebraska State AGbd_fb8f7b10f48f9e402025-08-07 · +11dVerified

Name: Harris, Burnett, Arend & Schmiesing CPA
norm: harris burnett arend schmiesing cpa

Name: Harris, Burnett, Arend & Schmiesing CPA
norm: harris burnett arend schmiesing cpa
Industry: Professional Servicesllm

Discovered: Jul 2, 2025
Materiality determined: —
Notification sent: Aug 11, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified New Hampshire Department of Justice, Office of the Attorney General
Initial access: valid_credentials

During the incident: Conducted an internal investigation to understand what had taken place and how
Reviewed its internal data management and protocols
Implemented enhanced security measures to help prevent this type of incident from recurring
Offering identity theft protection services through IDX, A ZeroFox Company
Changes made: Enhancing security
Refreshing all hardware to mitigate this risk in the future
Updating internal policies
Consulting with cybersecurity experts
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(47 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGAug 7 · first

Nebraska State AGAug 7 · first

Massachusetts State AG+4d

Maine State AG+4d

New Hampshire State AG+11d · this page

Pattern: first filing Aug 7 (IN), last Aug 18 (NH) — a 11-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://mm.nh.gov/files/uploads/doj/remote-docs/harris-burnett-arend-schmiesing-20250818.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 18, 2025
Raw hash: 90e514cfcb9025a4409fab9422370f34d5d709bc6844810713cb37cdc3ecac66

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityHarris, Burnett, Arend & Schmiesing CPA

Victim entityHarris, Burnett, Arend & Schmiesing CPA

Incidentdiscovered Jul 2, 2025

Stated responseConducted an internal investigation to understand what had taken place and how

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov