HackingGovernmentGovernmentData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

City of Michigan City IN

bd_b8bd1dd7470db872 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Sep 23, 2025

Filed

Nov 19, 2025

To disclose

—

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for City of Michigan City IN →

City of Michigan City, Indiana, reported a data event to the Nebraska Attorney General on November 19, 2025. The incident, discovered on September 23, 2025, involved unauthorized access to the City's computer network resulting in the exfiltration of names and Social Security numbers. One Nebraska resident was affected. The City took networks offline, engaged network specialists, notified federal law enforcement, and provided 12 months of credit monitoring via Kroll to the affected individual.

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Incident timeline

Sep 23, 2025

Begins

Sep 23, 2025

Discovered

Nov 19, 2025

Filed

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

Indiana State AGbd_5b5f0bf80ce7c59e2025-11-19Candidate

Name: Kennedys CMK LLP
norm: kennedys cmk

Name: City of Michigan City IN
norm: city of michigan city in
Industry: government_public
Industry: Governmentllm

Discovered: Sep 23, 2025
Breach occurred: Sep 23, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 19, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External
Regulator citations: Notified Nebraska Office of Attorney General

During the incident: Took networks offline
Partnered with network specialists
Notified federal law enforcement
Provided written notice of the event to potentially impacted individuals
Offered twelve (12) months of credit monitoring and identity protection services through Kroll
Changes made: Reviewing its existing security safeguards and policies already in place for ways to strengthen its systems to remain resilient against evolving threats
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 · 2 filings · 2 states

View merged incident ↗

Indiana State AGNov 19 · first

Nebraska State AGNov 19 · 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://nebraska.gov/ago/data-breach/documents/43ff2614-28ff-4b8d-b0b3-3b5220c72464.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 19, 2025
Raw hash: 565c7ef827eb8efa3c402e2386ed0b798e2e173caa9625a117dbfdc509f636ec

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityKennedys CMK LLP

Victim entityCity of Michigan City IN

Incidentdiscovered Sep 23, 2025

Stated responseTook networks offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov