Clustered 8 filings across 8 jurisdictions · filed Apr 8, 2025. View entity profile → Other incidents for this victim →
incident inc_3ee51e267e354e0d · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA IA IN MT NH OR VT 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 8 jurisdictions · Apr 8, 2025 · 3 milestones
Sep 1, 2023
Reported by VERMONT AG, CALIFORNIA AG filings
Sep 4, 2023 → Sep 9, 2023
When the intrusion reportedly occurred, per the linked filings
Sep 9, 2023
Reported by NEW HAMPSHIRE AG, WASHINGTON 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.
Eisner Advisory Group LLC notified consumers of a data breach occurring September 4-9, 2023. Unauthorized access was limited to specific files containing names and other personal information. The investigation is concluded. Eisner notified regulators and law enforcement, and is offering 12-24 months of credit monitoring. No evidence of misuse was found.
Eisner Advisory Group LLC notified the NH AG of unauthorized access to limited personal information of 130 NH residents between Sept 4-9, 2023. The breach was detected on Sept 9, 2023. Eisner completed its review on Feb 13, 2025, and notified residents on April 8, 2025, offering credit monitoring services.
Affected (this filing): 130
Eisner Advisory Group LLC, a finance sector entity reported a ransomware incident to the Washington Attorney General. The organization became aware of the incident on 2023-09-09 and filed notice on 2025-04-08. 2,121 Washington residents were affected. 577 days elapsed between awareness and notification. 5 days to identify the breach. 0 days to contain the breach.
Affected (this filing): 2,121
Eisner Advisory Group LLC, a professional services sector entity reported a data breach to the Iowa Attorney General. The breach was reported on 2025-04-08.
Eisner Advisory Group LLC reported a data breach to the Oregon Attorney General. The breach was reported on 2025-04-08. 84,795 individuals were affected.
Affected (this filing): 84,795
Eisner Advisory Group LLC reported a data breach to the Montana Attorney General. The breach was reported on 2025-04-08. The breach occurred from 09/04/2023 to 09/09/2023. 249 Montana residents were affected.
Affected (this filing): 249
Eisner Advisory Group LLC reported a data breach to the Indiana Attorney General. The breach occurred on 2023-09-24 and was reported on 2025-04-08. 626 Indiana residents were affected. 84,795 individuals affected in total.
Affected (this filing): 84,795
Eisner Advisory Group LLC notified the California Attorney General of an incident where an unknown actor gained unauthorized access to files between September 4 and September 9, 2023. The company became aware of suspicious activity in September 2023. In February 2025, the company completed its review and determined that affected individuals' names and other personal information were involved. The investigation is concluded. The company notified regulators and law enforcement and is offering credit monitoring services.