HackingData ExfiltratedCustomer Data InvolvedIdentity (basic)LowContained

Belkorp

bd_553661b59516e0d7 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 26, 2025

Filed

Sep 25, 2025

To disclose

22 weeks

Affected

3state residents only

Linked

5 filings

Confidence

61%

Full breach record for Belkorp →

Belkorp Ag, LLC notified Montana residents of a data breach occurring between April 18 and April 26, 2025. The company detected suspicious activity on April 26, 2025, and engaged third-party forensic specialists. An unauthorized actor accessed and copied data, including names and other personal information. Belkorp secured systems, notified law enforcement, and offered credit monitoring services to affected individuals.

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Incident timeline

undetected · 8 days

discovery → filing · 22 weeks / 152 days

Apr 18, 2025

Begins

Apr 26, 2025

Discovered

Sep 25, 2025

Filed

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_2c7cc4cf8f3b29c92025-09-29 · +4dVerified
California State AGbd_33f21d0ec4ef5dc02025-09-29 · +4dVerified
New Hampshire State AGbd_9dd6cf97306448632025-09-29 · +4dVerified
HHS OCRbd_dfdd474db57fec7c2025-09-29 · +4dVerified

Name: Belkorp
norm: belkorp
Domain: belkorp.com

Name: Belkorp
norm: belkorp
Domain: belkorp.com

Discovered: Apr 26, 2025
Breach occurred: Apr 18, 2025 – Apr 26, 2025
Undetected for: 8 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 29, 2025
Affected individuals: 3state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Launched an investigation into the nature and scope of the event with the assistance of third-party forensic specialists
Conducted a comprehensive review of the impacted data, with the assistance of a third-party specialist
Took steps to secure our systems
Notify federal law enforcement
Investigate the event
Notifying state and federal regulators as required
Providing you with access to [12/24] months of complimentary credit monitoring services through IDX
Changes made: Evaluate and enhance our safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 weeks(152 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 4 states

View merged incident ↗

Montana State AGSep 25 · first · this page

Massachusetts State AG+4d

California State AG+4d

New Hampshire State AG+4d

HHS OCR+4d

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/2025/10/Consumer-notification-letter-2.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 25, 2025
Raw hash: 9e5b0d2ba629c871173b48c6857ec27af45f6c9197b0d9b62df6f3be1c5a1573

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBelkorp

Victim entityBelkorp

Incidentdiscovered Apr 26, 2025

Stated responseLaunched an investigation into the nature and scope of the event with the assistance of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov