HackingPIIPHIIdentity (basic)Health (basic)LowContained

Green County Wisconsin

bd_e993800d29eac6e9 · schema v1 · pii pii-v2

Severity

Low

Discovered

Feb 4, 2025

Filed

Jun 2, 2025

To disclose

—

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for Green County Wisconsin →

Green County, Wisconsin, detected unauthorized network access on February 4, 2025. An investigation determined an actor accessed files containing personal and medical information (names, SSNs) between Feb 2-4, 2025. The county secured the environment, notified law enforcement, and engaged external cybersecurity professionals. No evidence of misuse was found. Notices were sent on May 19, 2025, offering credit monitoring and fraud alerts.

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Incident timeline

undetected · 2 days

Feb 2, 2025

Begins

Feb 4, 2025

Discovered

Jun 2, 2025

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Indiana State AGbd_382e411bd37f0c792025-06-02Candidate
Massachusetts State AGbd_4e306fbda7c2acb92025-06-03 · +1dVerified

Name: Green County Wisconsin
norm: green county wisconsin

Name: Green County Wisconsin
norm: green county wisconsin

Discovered: Feb 4, 2025
Breach occurred: Feb 2, 2025 – Feb 4, 2025
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 19, 2025
Affected individuals: Not disclosed
Data types: PIIPHIIdentity (basic)Health (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Secured the environment
Commenced a prompt and thorough investigation
Notified law enforcement
Working very closely with external cybersecurity professionals
Changes made: Placing a Fraud Alert and Security Freeze on your credit files
Obtaining a free credit report
Remaining vigilant in reviewing your financial account statements, explanation of benefits, and credit reports
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 · 3 filings · 3 states

View merged incident ↗

Indiana State AGJun 2 · first

Nebraska State AGJun 2 · first · this page

Massachusetts 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/945a8657-5089-49af-9de5-7cc22d8733d0.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 2, 2025
Raw hash: a1c841767a3a13728a832c1fabaa9675461e20b73eaf177b7c4d31fb8d03a941

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityGreen County Wisconsin

Victim entityGreen County Wisconsin

Incidentdiscovered Feb 4, 2025

Stated responseSecured the environment

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov