Montana State AG
Clustered 7 filings across 5 jurisdictions · filing window Mar 24, 2023 → Jun 23, 2023. View entity profile → Other incidents for this victim →
incident inc_4acb3874ffa640e0 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
Identity (basic) · Financial account · Financial credentials
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.
DE ME MT NH VT
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
Jan 20, 2023
When the intrusion reportedly occurred, per the linked filings
Jan 29, 2023
Reported by DELAWARE AG, NEW HAMPSHIRE AG, VERMONT AG filings
Mar 6, 2023
Reported by MAINE AG filings
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.
Atlantic General Hospital reported a data breach to the Montana Attorney General. The breach was reported on 2023-03-24. The breach occurred on 1/20/2023. 8 Montana residents were affected.
Affected (this filing): 8
Atlantic General Hospital, a healthcare organization, reported an external system breach that occurred between January 20, 2023, and January 29, 2023. The breach was discovered on March 6, 2023, and affected 3 Maine residents. The compromised data included names and financial account information. The hospital provided 12 months of credit and identity monitoring services to the individuals affected.
Affected (this filing): 3
Atlantic General Hospital notified individuals of a ransomware incident discovered on January 29, 2023, involving unauthorized access to servers beginning January 20, 2023. Encrypted files were found, and impacted records contained names and government identifiers. The hospital engaged forensic specialists, reported to law enforcement, and provided credit monitoring services.
Atlantic General Hospital notified the New Hampshire Attorney General on March 24, 2023, of a ransomware incident discovered on January 29, 2023. Unauthorized access to servers began on January 20, 2023. The breach affected 15 New Hampshire residents, exposing names and Social Security numbers. AGH engaged forensic specialists, notified law enforcement and HHS, and provided 12 months of credit monitoring.
Affected (this filing): 15
Atlantic General Hospital notified consumers on June 22, 2023, of a ransomware incident discovered on January 29, 2023. Unauthorized access occurred starting January 20, 2023, resulting in encrypted files. Affected data included names and other personal information. The hospital engaged forensic specialists, notified law enforcement, and offered credit monitoring services.
Atlantic General Hospital issued a supplemental notice regarding a January 2023 ransomware incident where unauthorized access led to encrypted files on hospital servers. The breach exposed patient names and variable data elements. The hospital engaged forensic specialists, notified law enforcement, and provided credit monitoring services to affected individuals across multiple jurisdictions.
Atlantic General Hospital reported an external system breach (hacking) that occurred from January 20, 2023, to January 29, 2023. The breach was discovered on March 6, 2023, and affected 136,981 individuals. The compromised information included names and financial account or credit/debit card numbers along with their security codes, access codes, or PINs. The hospital began notifying affected individuals on June 22, 2023, and offered 12 months of credit and identity monitoring services through IDX.
Affected (this filing): 136,981