AccidentalProfessional ServicesProfessional ServicesMisconfigurationCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumResolved

Anfinson, Thompson & Company, P.A.

bd_f7a6a64abcd7f6e8 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 1, 2022

Filed

Sep 7, 2022

To disclose

18 weeks

Affected

2state residents only

Linked

2 filings

Confidence

66%

Full breach record for Anfinson, Thompson & Company, P.A. →

Anfinson, Thompson & Company, P.A. notified clients in May 2022 that banking account information for a limited number of clients was changed during tax return transmission via their software. Investigation found no evidence of unauthorized access. The firm changed passwords, implemented access controls, and offered identity theft protection.

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Incident timeline

discovery → filing · 18 weeks / 129 days

May 1, 2022

Discovered

Sep 7, 2022

Filed

vs. sector median

+1 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_208fcd157c5e66772022-09-12 · +5dVerified

Name: Anfinson, Thompson & Company, P.A.
norm: anfinson thompson

Name: Anfinson, Thompson & Company, P.A.
norm: anfinson thompson
Industry: Professional Servicesllm

Discovered: May 1, 2022
Materiality determined: —
Notification sent: Sep 7, 2022
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Misconfiguration
MITRE ATT&CK: T1074 Data Staged
Regulator citations: Notified the IRSNotified the Minnesota Department of Revenue

During the incident: Hired independent cybersecurity experts to assist
Password to all of our systems have been changed
Implemented additional access controls on our tax software program
Notified the IRS and the Minnesota Department of Revenue of this incident
Offering you and your family identity theft protection services through IDX
Changes made: Implemented additional access controls on our tax software program
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(129 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Montana State AGSep 7 · first · this page

Massachusetts State AG+5d

Pattern: first filing Sep 7 (MT), last Sep 12 (MA) — a 5-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://dojmt.gov/wp-content/uploads/OCP/Consumer-Notification-Letter-549.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 7, 2022
Raw hash: 07cadfbc55009d02a4f50ec8e090af967e902c97c777e31045968b8e17422dc6

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityAnfinson, Thompson & Company, P.A.

Victim entityAnfinson, Thompson & Company, P.A.

Incidentdiscovered May 1, 2022

Stated responseHired independent cybersecurity experts to assist

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov