HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Fox Valley Tax Solutions

bd_e8e3dbc7fb9cd771 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 7, 2026

Filed

Jun 29, 2026

To disclose

8 weeks

Affected

2state residents only

Linked

6 records

Confidence

65%

Full breach record for Fox Valley Tax Solutions →

Fox Valley Tax Solutions notified the New Hampshire Attorney General on June 29, 2026, of a data event affecting two NH residents. Unauthorized access occurred between May 6-7, 2026, resulting in the copying of files containing names, SSNs, and financial account information. The company notified law enforcement/IRS and provided 12 months of credit monitoring via Kroll.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d8 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 1 days

discovery → filing · 8 weeks / 53 days

May 6, 2026

Begins

May 7, 2026

Discovered

Jun 29, 2026

Filed

vs. sector median

12 wks faster

This filing is one of 6 records about the same incident.View merged incident

A leak claim by akira about this victim was first seen 45 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteakirabd_d7ca14dc1f1da5ad2026-05-06 · +54dVerified by operator

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_921f32fca6912e8a2026-06-29Verified by operator
Indiana State AGbd_9e0d1081331eee282026-06-29Verified by operator
Nebraska State AGbd_e05d229bde75394c2026-06-29Verified
Illinois State AGbd_1e72d3c23948239f2026-06-01 · +28dVerified by operator

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Fox Valley Tax Solutions
norm: fox valley tax
Domain: foxvalleytaxsolutions.com
Industry: Professional Servicesllm

Discovered: May 7, 2026
Breach occurred: May 6, 2026 – May 7, 2026
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Jun 29, 2026
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated CollectionT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial

During the incident: Moved quickly to investigate and respond to the incident
Assessed the security of Fox Valley systems
Identified potentially affected individuals
Notified federal law enforcement and the Internal Revenue Service
Provided access to credit monitoring services for twelve (12) months through Kroll
Changes made: Strengthened the security of systems and computer environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 days from discovery to filing)
Compliance flags: Leak >30d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Illinois State AGJun 1 · first

Massachusetts State AG+28d

Indiana State AG+28d

Nebraska State AG+28d

New Hampshire State AG+28d · this page

Pattern: first filing Jun 1 (IL), last Jun 29 (NH) — a 28-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/fox-valley-tax-solutions-20260629.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 29, 2026
Raw hash: 78cfcd563a54d0abd48f33ada1f9bb4cac2251073d7b6f3497872254ea5666c9

Linked disclosures

Ransomware claims (1)

Regulatory filings (4) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityFox Valley Tax Solutions

Incidentdiscovered May 7, 2026

Stated responseMoved quickly to investigate and respond to the incident

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov