HackingEducationEducationCustomer Data InvolvedPIIIdentity (basic)LowContained

Winnebago Public Schools

bd_49de8a2ee82c4b66 · schema v1 · pii pii-v2

Severity

Low

Discovered

Oct 20, 2024

Filed

Dec 5, 2025

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

66%

Full breach record for Winnebago Public Schools →

Winnebago Public Schools (Nebraska) notified individuals of a cybersecurity incident occurring on or about October 20, 2024, involving unauthorized network access. The breach may involve personal information of students/staff. The school engaged third-party cybersecurity professionals and offered credit monitoring and identity theft recovery services. No identity fraud has been reported to date.

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Incident timeline

Oct 20, 2024

Begins

Oct 20, 2024

Discovered

Dec 5, 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

Massachusetts State AGbd_d6edddd3778a61272025-12-05Verified

Name: Winnebago Public Schools
norm: winnebago public schools

Name: Winnebago Public Schools
norm: winnebago public schools
Industry: Educationllm

Discovered: Oct 20, 2024
Breach occurred: Oct 20, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 17, 2025
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Commenced an immediate and thorough investigation
Working very closely with third-party cybersecurity professionals
Offering a complimentary credit and CyberScan monitoring
Offering a $1,000,000 insurance reimbursement policy
Offering fully managed id theft recovery services
Reviewed and revised our information security practices
Implemented additional security measures
Changes made: Reviewed and revised our information security practices
Implemented additional security measures to mitigate the chance of a similar event in the future
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 ↗

Massachusetts State AGDec 5 · first

Nebraska State AGDec 5 · 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/2e94e048-4996-4ce9-b064-b8d80c0576bd.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 5, 2025
Raw hash: c0b91dc2a871e75a106481867eaee6f435f10a92370479aa80ad51d5965f0d9c

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityWinnebago Public Schools

Victim entityWinnebago Public Schools

Incidentdiscovered Oct 20, 2024

Stated responseCommenced an immediate and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov