Clustered 3 filings across 3 jurisdictions · filing window Sep 24, 2025 → Oct 6, 2025. View entity profile → Other incidents for this victim →
incident inc_f2d63bb044a34fec · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
ME MT NH
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.
all State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
May 6, 2025
When the intrusion reportedly occurred, per the linked filings
May 18, 2025
Reported by MAINE AG, NEW HAMPSHIRE AG filings
Union County, Ohio reported a data breach to the Montana Attorney General. The breach was reported on 2025-09-24. The breach occurred from 05/06/2025 to 05/18/2025. 21 Montana residents were affected.
Affected (this filing): 21
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.
Union County, Ohio detected ransomware on its computer network on May 18, 2025. Threat actors accessed the network from May 6 through May 18, 2025, and exfiltrated County data. A data review was completed on August 25, 2025. A total of 45,487 individuals were affected, including 2 Maine residents. Experian credit monitoring and identity restoration services were offered for 12 months. Federal law enforcement was notified.
Affected (this filing): 2
Union County, Ohio notified the New Hampshire Attorney General of a ransomware incident. Unauthorized access occurred May 6-18, 2025, detected May 18, 2025. Names and SSNs of 20 NH residents were compromised. Notices sent Sept 24, 2025, including credit monitoring.
Affected (this filing): 20