Social EngineeringFinancial ServicesFinancePhishingCustomer Data InvolvedPIIIdentity (basic)LowContained

COMMUNITY STATE BANK

bd_f4ed66a55597a1a6 · schema v1 · pii pii-v2

Severity

Low

Discovered

May 1, 2025

Filed

Aug 29, 2025

To disclose

—

Affected

Not disclosed

Confidence

65%

Full breach record for COMMUNITY STATE BANK →2 incidents on file

Community State Bank notified Nebraska residents of a security incident where an unauthorized party accessed an employee email account between May 1 and May 8, 2025. The breach potentially exposed customer personal information. The bank engaged forensic investigators, concluded its review on August 7, 2025, and sent notification letters on August 29, 2025, offering 12 months of credit monitoring via Experian. No evidence of misuse was found.

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Incident timeline

May 1, 2025

Begins

May 1, 2025

Discovered

Aug 29, 2025

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: COMMUNITY STATE BANK
norm: community state bank

Name: COMMUNITY STATE BANK
norm: community state bank
Industry: Financial Servicesllm

Discovered: May 1, 2025
Breach occurred: May 1, 2025 – May 8, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 29, 2025
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Initial access: phishing_link

During the incident: Engaged external cybersecurity professionals
Conducted forensic investigation and internal review
Offered complimentary access to Experian IdentityWorksSM Credit 3B for twelve (12) months
Set up a dedicated and confidential toll-free response line
Changes made: Continually evaluate and modify practices and internal controls to enhance security and privacy
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.

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/a8b9b36f-3d3e-488f-8c97-fb4593c3a519.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 29, 2025
Raw hash: 5a1179d12e33974be9b1db4f0c35a38dcc7930d0197953f14e14fdeb19bc1559

Reporting entityCOMMUNITY STATE BANK

Victim entityCOMMUNITY STATE BANK

Incidentdiscovered May 1, 2025

Stated responseEngaged external cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov