HackingRetail & ConsumerRetailData ExfiltratedCustomer Data InvolvedIdentity (basic)Financial accountLowContained

Sellmark Corporation

bd_0defb7036f616073 · schema v1 · pii pii-v2

Severity

Low

Discovered

Aug 14, 2025

Filed

Sep 11, 2025

To disclose

—

Affected

1state residents only

Linked

6 filings

Confidence

67%

Full breach record for Sellmark Corporation →

Sellmark Corporation experienced unauthorized access to its computer network, resulting in the exfiltration of one Nebraska resident's name and payment card information. The incident was discovered on August 14, 2025, and notification was mailed on September 11, 2025. Sellmark engaged a cybersecurity firm, reported the incident to the FBI, and implemented additional security measures.

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Incident timeline

Aug 14, 2025

Discovered

Sep 11, 2025

Filed

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Maine State AGbd_481c301aa70aed912025-09-11Candidate
Indiana State AGbd_4e42db266ced1ff92025-09-11Verified
Massachusetts State AGbd_907eb546453cc0ac2025-09-11Verified
New Hampshire State AGbd_945f9c63c06c97532025-09-11Verified

Show 1 more filing ↓up to 1d gap

Texas State AGbd_68aa45d2d7f88a2a2025-09-12 · +1dVerified by operator

Name: Sellmark Corporation
norm: sellmark

Name: Sellmark Corporation
norm: sellmark
Industry: Retail & Consumerllm

Discovered: Aug 14, 2025
Materiality determined: —
Notification sent: Sep 11, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: reported the incident to law enforcement

During the incident: Took measures to secure its systems
Launched an investigation with the help of a cybersecurity firm
Reported the incident to law enforcement
Reported the incident to the FBI
Mailed a notification letter via U.S. First-Class mail
Established a dedicated, toll-free call center
Changes made: Implemented additional measures to enhance the security of its systems
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Maine State AGSep 11 · first

Indiana State AGSep 11 · first

Massachusetts State AGSep 11 · first

New Hampshire State AGSep 11 · first

Nebraska State AGSep 11 · first · this page

Texas State AG+1d

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://nebraska.gov/ago/data-breach/documents/b4d34669-32c1-4801-9e21-aacde871d3f9.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 11, 2025
Raw hash: 64756d74234c47f54205b1dea776a90efb02d93342d4b6fa37687f6d9308b568

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entitySellmark Corporation

Victim entitySellmark Corporation

Incidentdiscovered Aug 14, 2025

Stated responseTook measures to secure its systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov