HackingProfessional ServicesProfessional ServicesStolen CredentialsTargetedData ExfiltratedIdentity (basic)Government IDFinancial accountMediumContained

Harding, Shymanski & Company, P.S.C.

bd_7c26b591a4b95e4a · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 15, 2023

Filed

Apr 11, 2023

To disclose

27 days

Affected

4state residents only

Linked

2 filings

Confidence

67%

Full breach record for Harding, Shymanski & Company, P.S.C. →

Harding, Shymanski & Company, P.S.C. notified clients of a data security incident where an unknown third party fraudulently filed 2022 tax returns using compromised client credentials. The breach potentially exposed names, DOBs, SSNs, driver's license numbers, and financial account information. The firm engaged forensic specialists and offered credit monitoring.

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Incident timeline

discovery → filing · 27 days

Mar 15, 2023

Discovered

Apr 11, 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

Indiana State AGbd_d1579b0e6608800d2023-04-07 · +4dVerified

Name: Harding, Shymanski & Company, P.S.C.
norm: harding shymanski company psc

Name: Harding, Shymanski & Company, P.S.C.
norm: harding shymanski company psc
Industry: Professional Servicesllm

Discovered: Mar 15, 2023
Materiality determined: —
Notification sent: —
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: contacted federal law enforcement and the IRS
Initial access: valid_credentials

During the incident: Review our network security
Contacted federal law enforcement and the IRS
Began an investigation with the assistance of third-party forensic specialists
Undertook a comprehensive review process in order to identify the specific clients impacted
Arranged for you to activate, at no cost to you, an online credit monitoring service for <<CM Length >> months provided by Equifax
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 days(27 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 ↗

Indiana State AGApr 7 · first

Montana State AG+4d · 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-180.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 11, 2023
Raw hash: 6036641b8859d6019cca1d9466454bb891b93e6404eb1f8a28e84da83efd58d0

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityHarding, Shymanski & Company, P.S.C.

Victim entityHarding, Shymanski & Company, P.S.C.

Incidentdiscovered Mar 15, 2023

Stated responseReview our network security

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov