HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDFinancial accountMediumContained

Meicher CPAs, LLP

bd_943e57a4ee14d74d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 9, 2023

Filed

Apr 3, 2023

To disclose

25 days

Affected

2state residents only

Linked

2 filings

Confidence

65%

Full breach record for Meicher CPAs, LLP →

Meicher CPAs, LLP notified Montana residents of unauthorized access to computer systems between Feb 6 and Mar 9, 2023. Discovered Mar 9, 2023. Exposed names, SSNs, and potentially financial account info. Firm engaged forensic specialists, worked with IRS/State DORs, and offered 12 months of Equifax credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 31 days

discovery → filing · 25 days

Feb 6, 2023

Begins

Mar 9, 2023

Discovered

Apr 3, 2023

Filed

vs. sector median

15 wks faster

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

Maine State AGbd_89b453ddc55c20002023-04-03Candidate

Name: Meicher CPAs, LLP
norm: meicher cpas
Domain: meicher.cpa

Name: Meicher CPAs, LLP
norm: meicher cpas
Domain: meicher.cpa
Industry: Professional Servicesllm

Discovered: Mar 9, 2023
Breach occurred: Feb 6, 2023 – Mar 9, 2023
Undetected for: 31 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Working with the IRSWorking with various state Departments of Revenue, including the Wisconsin Department of Revenue

During the incident: Launched an investigation with the assistance of third-party forensic specialists
Offering you access to complimentary credit monitoring and identity protection services for 12 months through Equifax
Taking steps to implement additional safeguards and review policies and procedures relating to data privacy and security
Working with the IRS and various state Departments of Revenue
Changes made: Implementing additional safeguards
Reviewing policies and procedures relating to data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 days(25 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 ↗

Maine State AGApr 3 · first

Montana State AGApr 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-165.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 3, 2023
Raw hash: e2e8889235ce7e7489652865c2c0c74b009aff1fa80916709c86ea66b522219a

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMeicher CPAs, LLP

Victim entityMeicher CPAs, LLP

Incidentdiscovered Mar 9, 2023

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov