HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDMediumContained

eTaxservice.com

bd_6463bbb11dc07118 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 12, 2025

Filed

Nov 3, 2025

To disclose

7 weeks

Affected

5state residents only

Linked

4 filings

Confidence

66%

Full breach record for eTaxservice.com →

Etaxservice.com, LLC notified the New Hampshire Attorney General of a data event affecting 5 NH residents. Unauthorized access to a tax service account occurred between June 20, 2025, and September 12, 2025. Personal information (name, SSN) was potentially accessed. Etaxservice engaged third-party specialists, notified the IRS, and provided 12 months of TransUnion credit monitoring to affected individuals.

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Incident timeline

undetected · 84 days

discovery → filing · 7 weeks / 52 days

Jun 20, 2025

Begins

Sep 12, 2025

Discovered

Nov 3, 2025

Filed

vs. sector median

11 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_9efc40d71551e2412025-11-03Candidate
Indiana State AGbd_e52bc204e1f9b17a2025-11-03Verified
Massachusetts State AGbd_fbbb656c6ed1ed592025-11-03Verified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: eTaxservice.com
norm: etaxservicecom
Domain: etaxservice.com
Industry: Professional Servicesllm

Discovered: Sep 12, 2025
Breach occurred: Jun 20, 2025 – Sep 12, 2025
Undetected for: 84 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 3, 2025
Affected individuals: 5state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified the Internal Revenue Serviceproviding written notice of this incident to relevant state and federal regulators
Initial access: valid_credentials

During the incident: Launched an investigation with the assistance of third-party technology specialists
Notified the Internal Revenue Service
Implemented additional security measures
Providing access to credit monitoring services for twelve (12) months through TransUnion
Changes made: Implemented additional security measures to further protect against similar events in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(52 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Maine State AGNov 3 · first

Indiana State AGNov 3 · first

Massachusetts State AGNov 3 · first

New Hampshire State AGNov 3 · 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://mm.nh.gov/files/uploads/doj/remote-docs/etaxservice-20251103.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 3, 2025
Raw hash: 0c762d2ccb4826249436d4db7ab93865b8e4117189a8de975935730ca7a76924

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityeTaxservice.com

Incidentdiscovered Sep 12, 2025

Stated responseLaunched an investigation with the assistance of third-party technology specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov