MalwareEducationEducationRansomwareData ExfiltratedCustomer Data InvolvedGovernment IDMediumActive

Shelley School District

bd_3165929c1e2763c1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 6, 2021

Filed

Feb 23, 2022

To disclose

11 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

66%

Full breach record for Shelley School District →

Shelley School District (Idaho) notified the Idaho Attorney General on Feb 23, 2022, of a ransomware attack impacting systems starting Dec 6, 2021. The investigation revealed potential unauthorized access to Idaho residents' Social Security numbers. The District engaged forensic investigators, deployed SentinelOne, and migrated authentication to the cloud. Data was exfiltrated; the scope of affected individuals is still being determined.

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Incident timeline

discovery → filing · 11 weeks / 79 days

Dec 6, 2021

Discovered

Feb 23, 2022

Filed

vs. sector median

+4 wks slower

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

Idaho State AGbd_d530cffe515bbf522022-03-23 · +28dVerified
Montana State AGbd_6d83b2b9c1f5dbf42022-03-24 · +29dVerified

Name: Shelley School District
norm: shelley school district

Name: Shelley School District
norm: shelley school district
Industry: Educationllm

Discovered: Dec 6, 2021
Materiality determined: Feb 23, 2022
Notification sent: —
Affected individuals: Not disclosed
Data types: Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: notified the Idaho Chief Information Security Officer (CISO)notified the Federal Bureau of Investigation (FBI)notified the Idaho Superintendent of Public Instructionnotified the Idaho State Department of Education Executive Director

During the incident: Engaged legal counsel with an expertise in cybersecurity
Hired a nationally-recognized cyber security and digital forensics firm to assist with the investigation
Deployed SentinelOne, an endpoint detection and response tool
Migrated authentication of all devices to a cloud-based system
Changes made: Migrated authentication of all devices to a cloud-based system
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(79 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 2 states

View merged incident ↗

Idaho State AGFeb 23 · first · this page

Idaho State AG+28d

Montana State AG+29d

Pattern: first filing Feb 23 (ID), last Mar 24 (MT) — a 29-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://ag.idaho.gov/content/uploads/2022/03/02-23-2022-Shelley-School-District.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 23, 2022
Raw hash: 5b73e642da3d139bca156959c9e691870fb2a3e71bfda9cd9994954ae302e4b0

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityShelley School District

Victim entityShelley School District

Incidentdiscovered Dec 6, 2021

Stated responseEngaged legal counsel with an expertise in cybersecurity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceag.idaho.gov