MalwareEducationEducationRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountFinancial credentialsEducationMediumResolved

Shelley School District

bd_d530cffe515bbf52 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 6, 2021

Filed

Mar 23, 2022

To disclose

15 weeks

Affected

171state residents only

Linked

3 filings

Confidence

66%

Full breach record for Shelley School District →

Shelley School District in Idaho experienced a ransomware attack on December 6, 2021. Cybercriminals exfiltrated data before deploying ransomware. The breach affected approximately 171 Idaho residents, including students, employees, and families. Affected data included names, dates of birth, addresses, Social Security numbers, driver's license numbers, and for some, bank account and payment card details. The district contained the attack, restored operations, and notified the FBI and state regulators. Remediation steps include deploying EDR, adding MFA, and enhancing security training.

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Incident timeline

discovery → filing · 15 weeks / 107 days

Dec 6, 2021

Begins

Dec 6, 2021

Discovered

Mar 23, 2022

Filed

vs. sector median

+8 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

Montana State AGbd_6d83b2b9c1f5dbf42022-03-24 · +1dVerified
Idaho State AGbd_3165929c1e2763c12022-02-23 · +28dCandidate

Name: Shelley School District
norm: shelley school district

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

Discovered: Dec 6, 2021
Breach occurred: Dec 6, 2021
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 24, 2022
Affected individuals: 171state-resident count only
Data types: Identity (basic)Government IDFinancial accountFinancial credentialsEducation
Data elements: Date of birth
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the Federal Bureau of Investigation (FBI)Providing regular updates to the Idaho Chief Information Security Officer, Chief Information Officer and Office of Risk ManagementNotified the Idaho State Department of EducationNotified the Idaho Attorney General’s office

During the incident: Immediately began working with cybersecurity experts and legal counsel to contain and eradicate any malware
Hired a nationally-recognized cyber security and digital forensics firm to assist
Contained the attack and securely restored operations
Notified the Federal Bureau of Investigation (FBI)
Providing regular updates about this incident to the Idaho Chief Information Security Officer, Chief Information Officer and Office of Risk Management
Notified the Idaho State Department of Education and the Idaho Attorney General’s office
Offering a one-year, complimentary membership with Experian for credit monitoring and identity theft services
Changes made: Deploying end-point detection and response tools to enhance network monitoring
Deleting or archiving outdated information
Adding Multi-Factor Authentication
Strengthening backups and ability to recover data from backups
Closely monitoring and restricting outside access to its computer network
Increasing password complexity requirements
Strengthening email filtering to help block dangerous emails
Updating its incident response procedures to more quickly and effectively respond to incidents
Enhancing cyber training and providing regular communications in order to increase cyber awareness
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(107 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

Idaho State AG+28d · this page

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/2022/03/03-23-22-Shelly-School-District.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 23, 2022
Raw hash: b2346439fd26cf04bf633db99c35d43237a5d1974fc1e870f0f0b4eeb5129ad1

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityShelley School District

Victim entityShelley School District

Incidentdiscovered Dec 6, 2021

Stated responseImmediately began working with cybersecurity experts and legal counsel to contain and eradicate any malware

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceag.idaho.gov