HackingEducationEducationData ExfiltratedPIILowContained

School District of Elmbrook

bd_07f8e00999ac259b · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 13, 2023

Filed

Feb 24, 2023

To disclose

6 weeks

Affected

Not disclosed

Linked

7 filings

Confidence

64%

Full breach record for School District of Elmbrook →

School District of Elmbrook notified consumers of unauthorized network access between Aug 23-27, 2022. Personal information was removed from the network. The district engaged external cybersecurity professionals and offers one year of Experian IdentityWorks credit monitoring.

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Leak gap clock⏱ Leak >90d6 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 143 days

discovery → filing · 6 weeks / 42 days

Aug 23, 2022

Begins

Jan 13, 2023

Discovered

Feb 24, 2023

Filed

vs. sector median

1 wks faster

This filing is one of 7 about the same incident.View merged incident

A leak claim by vicesociety about this victim predates this filing by 173 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitevicesocietybd_7f2b03a8cf189ee72022-09-04 · +173dVerified by operator

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_f7b07cb2af127ba42023-03-16 · +20dVerified by operator
New Hampshire State AGbd_132e2b67c110056b2023-03-20 · +24dVerified
Indiana State AGbd_3d648f4b42e330982022-09-23 · +154dVerified by operator
Maine State AGbd_7a271ebaf508f2b02022-09-23 · +154dVerified by operator

Show 1 more filing ↓up to 345d gap

Montana State AGbd_c7b6cdac2a0616dd2022-03-16 · +345dVerified by operator

Name: School District of Elmbrook
norm: school district of elmbrook

Name: School District of Elmbrook
norm: school district of elmbrook
Industry: Educationllm

Discovered: Jan 13, 2023
Breach occurred: Aug 23, 2022 – Aug 27, 2022
Undetected for: 143 daysoccurrence → discovery
Materiality determined: Feb 24, 2023
Notification sent: Feb 24, 2023
Affected individuals: Not disclosed
Data types: PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Commenced a prompt and thorough investigation
Working very closely with external cybersecurity professionals
Offering a complimentary one-year membership of Experian IdentityWorksSM Credit 3B
Changes made: Continually evaluate and modify our practices to enhance the security and privacy of your information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(42 days from discovery to filing)
Compliance flags: Leak >90dVT AG >14 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Montana State AGMar 16 · first

Indiana State AG+191d

Maine State AG+191d

Vermont State AG+345d · this page

Massachusetts State AG+365d

New Hampshire State AG+369d

Pattern: first filing Mar 16 (MT), last Mar 20 (NH) — a 369-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://ago.vermont.gov/document/2023-02-24-school-district-elmbrook-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 24, 2023
Raw hash: f0382338be27b6304942d0a90e8dc66d265c4ec0150f2d56e0a737b313976ba8

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entitySchool District of Elmbrook

Victim entitySchool District of Elmbrook

Incidentdiscovered Jan 13, 2023

Stated responseCommenced a prompt and thorough investigation

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov