MalwareEducationEducationRansomwareData EncryptedIdentity (basic)Government IDMediumContained

Bainville School District

bd_40c82a80a1f4bddf · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 23, 2019

Filed

Dec 4, 2019

To disclose

6 weeks

Affected

120state residents only

Confidence

66%

Full breach record for Bainville School District →

Bainville School District notified individuals of a ransomware incident discovered on October 23, 2019. A server containing employment background check data (names and SSNs) was affected. No evidence of misuse was found. The District offered one year of Experian IdentityWorks credit monitoring.

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Incident timeline

discovery → filing · 6 weeks / 42 days

Oct 23, 2019

Discovered

Dec 4, 2019

Filed

vs. sector median

4 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed120 affectedView incident

Name: Bainville School District
norm: bainville school district
Domain: bainvilleschool.k12.mt.us

Name: Bainville School District
norm: bainville school district
Domain: bainvilleschool.k12.mt.us
Industry: Educationllm

Discovered: Oct 23, 2019
Materiality determined: —
Notification sent: —
Affected individuals: 120state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial

During the incident: Secured the server
Commenced an investigation
Took steps to restore access to District data
Offering you a complimentary one-year membership in Experian’s® IdentityWorksSM Credit 3B
Changes made: Implemented additional safeguards and technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(42 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://dojmt.gov/wp-content/uploads/OCP/Consumer-39.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 4, 2019
Raw hash: fc89db80bd8570ed85f0de4ab78379e7a814b479b1676b5ede2e5317a5ef98e5

Reporting entityBainville School District

Victim entityBainville School District

Incidentdiscovered Oct 23, 2019

Stated responseSecured the server

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov