MalwareEducationEducationRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedIdentity (basic)Government IDMediumActive

Kenosha Unified School District

bd_81587e2f5f5fb16f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 23, 2022

Filed

Nov 29, 2022

To disclose

6 weeks

Affected

1state residents only

Linked

4 filings

Confidence

66%

Full breach record for Kenosha Unified School District →

Kenosha Unified School District notified the NH Attorney General of a ransomware incident occurring on Sept 23, 2022. Forensic review on Oct 20, 2022 confirmed unauthorized access and removal of files containing NH resident PII (name, SSN). One NH resident affected. Notification sent Nov 23, 2022. Remediation includes MFA, firewall upgrades, and password resets. Credit monitoring offered.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d6 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 10 weeks / 67 days

Sep 23, 2022

Begins

Sep 23, 2022

Discovered

Nov 29, 2022

Filed

vs. sector median

3 wks faster

This filing is one of 4 about the same incident.View merged incident

A leak claim by snatch about this victim predates this filing by 36 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siterevilbd_df8ac0767899b1e52022-11-28Candidate
Leak Sitesnatchbd_2c72f02b213468512022-10-24 · +36dVerified by operator

Regulatory filings (1) · sorted by filing gap

Montana State AGbd_c09f257f9faf2c632022-11-23 · +6dVerified by operator

Name: Kenosha Unified School District
norm: kenosha unified school district
Domain: kusd.edu

Name: Kenosha Unified School District
norm: kenosha unified school district
Domain: kusd.edu
Industry: Educationllm

Discovered: Sep 23, 2022
Breach occurred: Sep 23, 2022
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 23, 2022
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Office of the Attorney General

During the incident: Commenced a prompt and thorough investigation
Working very closely with external cybersecurity professionals
Conducted an extensive forensic investigation and manual document review
Disabled all unauthorized access to the network
Launched an investigation in consultation with outside cybersecurity professionals
Provided the affected resident with written notification
Offering the affected resident complimentary one-year membership with a credit monitoring service
Advised the affected resident about the process for placing a fraud alert and/or security freeze
Provided contact information for consumer reporting agencies and the Federal Trade Commission
Changes made: Strengthened our network
Implemented additional security improvements recommended by third-party cyber security experts
Resetting account passwords
Strengthening our password security policies
Ensuring compliance with multi-factor authentication for network access
Upgrading our firewall
Deploying endpoint detection software
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(40 days from discovery to filing)
Compliance flags: Leak >30d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Montana State AGNov 23 · first

New Hampshire State AG+6d · this page

Pattern: first filing Nov 23 (MT), last Nov 29 (NH) — a 6-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/kenosha-unified-school-district-20221129.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 29, 2022
Raw hash: 0b8b40d3eff359337103bb817e577bfcdc270050dd1609ea16e6fbfd6a0cda92

Linked disclosures

Ransomware claims (2)

Regulatory filings (1) · sorted by filing gap

Reporting entityKenosha Unified School District

Victim entityKenosha Unified School District

Incidentdiscovered Sep 23, 2022

Stated responseCommenced a prompt and thorough investigation

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov