Clustered 3 filings across 2 jurisdictions · filing window Feb 23, 2022 → Mar 24, 2022. View entity profile → Other incidents for this victim →
incident inc_5f485a04e0574c57 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Government ID
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
ID MT
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 6, 2021
When the intrusion reportedly occurred, per the linked filings
Dec 6, 2021
Reported by IDAHO AG filings
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.
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
Shelley School District (Idaho) disclosed a ransomware attack on December 6, 2021, affecting approximately 171 Idaho residents. Cybercriminals exfiltrated data including names, DOBs, addresses, SSNs/driver's licenses, and for a small subset, bank/payment card details. The District engaged forensic experts, notified the FBI and state regulators, and offered one year of Experian credit monitoring. Remediation includes MFA, enhanced backups, and endpoint detection.
Affected (this filing): 171
Shelley School District reported a data breach to the Montana Attorney General. The breach was reported on 2022-03-24. The breach occurred on 12/6/2021. 3 Montana residents were affected.
Affected (this filing): 3