HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

KBF CPAs

bd_e7118a4308c336ba · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 16, 2023

Filed

Sep 13, 2023

To disclose

28 days

Affected

2state residents only

Linked

2 filings

Confidence

66%

Full breach record for KBF CPAs →2 incidents on file

KBF CPAs notified Montana residents of a security incident where an unauthorized individual accessed a third-party storage platform in November 2022. Discovery occurred on August 16, 2023, following forensic review. Personal information, including SSNs and financial data, was potentially accessed. KBF engaged external cybersecurity professionals and offers 12 months of credit monitoring.

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Incident timeline

undetected · 288 days

discovery → filing · 28 days

Nov 1, 2022

Begins

Aug 16, 2023

Discovered

Sep 13, 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

Oregon State AGbd_fbf6db9595ee57702023-09-13Verified by operator

Name: KBF CPAs
norm: kbf cpas

Name: KBF CPAs
norm: kbf cpas
Industry: Professional Servicesllm

Discovered: Aug 16, 2023
Breach occurred: Nov 1, 2022
Undetected for: 288 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: Third-Party / Supply Chain
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Commenced a prompt and thorough investigation
Working very closely with external cybersecurity professionals
Extensive forensic investigation and manual document review
Providing you with complimentary access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services
Providing you with proactive fraud assistance
Changes made: Taken many precautions to safeguard it
Continually evaluate and modify our practices to enhance the security and privacy of your information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 days(28 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 ↗

Oregon State AGSep 13 · first

Montana State AGSep 13 · 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-671.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 13, 2023
Raw hash: b1c886e9679cdfadc1290f1e7885855b1df54d3daa354d7b7033c4f0369409b0

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityKBF CPAs

Victim entityKBF CPAs

Incidentdiscovered Aug 16, 2023

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov