HackingPIIIdentity (basic)LowContained

City of New Brighton, MN

bd_63466ffaed723375 · schema v1 · pii pii-v2

Severity

Low

Discovered

Jun 16, 2025

Filed

Oct 17, 2025

To disclose

—

Affected

Not disclosed

Confidence

65%

City of New Brighton, MN experienced unauthorized access to a limited number of employee email accounts between May 29, 2025, and June 18, 2025. The City discovered the access on June 16, 2025, and concluded on September 18, 2025, that personal information was potentially involved. The City engaged cybersecurity experts, contained the incident, and sent notification letters to affected individuals offering credit monitoring and fraud alerts.

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Incident timeline

undetected · 18 days

May 29, 2025

Begins

Jun 16, 2025

Discovered

Oct 17, 2025

Filed

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

Name: City of New Brighton, MN
norm: city of new brighton

Name: City of New Brighton, MN
norm: city of new brighton

Discovered: Jun 16, 2025
Breach occurred: May 29, 2025 – Jun 18, 2025
Undetected for: 18 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 18, 2025
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Took steps to contain the incident
Commenced an immediate and thorough investigation
Engaged leading cybersecurity experts to identify what personal information, if any, was involved
Changes made: Providing complimentary services
Providing enrollment instructions for credit monitoring
Providing precautionary measures including placing a Fraud Alert and Security Freeze on credit files
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/6a83acce-07a8-4371-82dc-b2ac3f044930.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 17, 2025
Raw hash: d98274b0ed6375cb663ca5c9641da2f401ab63eb84f3a1a4d13b16e8e234e7cb

Reporting entityCity of New Brighton, MN

Victim entityCity of New Brighton, MN

Incidentdiscovered Jun 16, 2025

Stated responseTook steps to contain the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov