Montana State AG
Clustered 8 filings across 6 jurisdictions · filing window Dec 19, 2024 → Feb 3, 2025. View entity profile → Other incidents for this victim →
incident inc_7ef1e178692c41ec · merge_method human · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA DE ME MT OR WA
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
8 filings across 6 jurisdictions · Dec 19, 2024 – Feb 3, 2025 · 2 milestones
May 7, 2024
When the intrusion reportedly occurred, per the linked filings
May 8, 2024
Reported by CALIFORNIA AG, WASHINGTON AG, MAINE AG, OREGON 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.
Ascension Health reported a data breach to the Montana Attorney General. The breach was reported on 2024-12-19. The breach occurred from 05/07/2024 to 05/08/2024. 4,568 Montana residents were affected.
Affected (this filing): 4,568
Ascension Health reported a data breach to the Oregon Attorney General. The breach was reported on 2024-12-19. 5,599,699 individuals were affected.
Affected (this filing): 5,599,699
Ascension Health experienced a ransomware attack resulting in unauthorized access to patient and associate data. The breach occurred between February 29 and June 11, 2024, and was detected on May 8, 2024. A cybercriminal exfiltrated files containing names, medical records, payment info, insurance IDs, and government IDs. Ascension engaged cybersecurity experts, notified law enforcement, and offered identity protection services.
Ascension Health, a health sector entity reported a ransomware incident to the Washington Attorney General. The organization became aware of the incident on 2024-05-08 and filed notice on 2024-12-19. 5,787 Washington residents were affected. 225 days elapsed between awareness and notification. 69 days to identify the breach. 34 days to contain the breach.
Affected (this filing): 5,787
On May 8, 2024, Ascension Health detected unauthorized activity on its technology systems resulting from a ransomware attack. A cybercriminal obtained copies of files on May 7–8, 2024, containing patient and employee personal information including medical, payment, insurance, government ID, and other personal data. Approximately 658 Maine residents were notified on December 19, 2024. Total affected individuals numbered 5,599,699. IDX identity protection services were offered for 24 months.
Affected (this filing): 658
Ascension Health submitted a supplemental notification to the Delaware Department of Justice on February 3, 2025, regarding a prior data security incident. The organization notified approximately 616 Delaware residents via USPS mail after finalizing its data analysis. This filing supplements a previous letter dated December 19, 2024.
Affected (this filing): 616
Ascension Health detected a ransomware attack on May 8, 2024, involving unauthorized access to systems on May 7-8, 2024. A cybercriminal exfiltrated files containing patient and associate personal information, including medical records, payment info, and government IDs. The organization engaged cybersecurity experts, notified law enforcement, and offered identity theft protection.
Ascension Health reported a data breach to the Oregon Attorney General. The breach was reported on 2025-02-03. The breach occurred during 2/29/2024 - 5/8/2024. The breach was discovered on 5/8/2024. 5,466,931 individuals were affected. Notice was sent on 12/19/2024.
Affected (this filing): 5,466,931