Clustered 5 filings across 5 jurisdictions · filed Nov 24, 2025. View entity profile → Other incidents for this victim →
incident inc_0c4274a614b54b65 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA IN MT NH VT
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
Aug 9, 2025
When the intrusion reportedly occurred, per the linked filings
Oct 30, 2025
Reported by NEW HAMPSHIRE AG, VERMONT 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.
Dartmouth College reported a data breach to the Indiana Attorney General. The breach occurred on 2025-08-09 and was reported on 2025-11-24. 413 Indiana residents were affected.
Affected (this filing): 413
Dartmouth College reported a data breach to the Montana Attorney General. The breach was reported on 2025-11-24. The breach occurred from 08/09/2025 to 08/12/2025. 193 Montana residents were affected.
Affected (this filing): 193
Dartmouth College notified the California AG of a data breach involving its Oracle eBusiness Suite software. An unauthorized actor exploited a zero-day vulnerability to exfiltrate files between August 9 and August 12, 2025. The stolen data included names, Social Security numbers, and financial account information. Dartmouth secured the environment, notified law enforcement, applied patches, and offered one year of identity monitoring to affected individuals.
Dartmouth College notified the New Hampshire Attorney General of a security incident involving its Oracle eBusiness Suite (EBS) software. An unauthorized actor exploited a zero-day vulnerability in the software to exfiltrate files containing names, Social Security numbers, and financial account information of 31,742 New Hampshire residents between August 9 and 12, 2025. Dartmouth discovered the incident on October 30, 2025, and began notifying affected individuals on November 24, 2025. Remediation included applying available patches and offering one year of credit monitoring.
Affected (this filing): 31,742
Dartmouth College notified consumers of a data breach involving its Oracle eBusiness Suite (EBS) software. An unauthorized actor exploited a zero-day vulnerability to access files containing names and Social Security Numbers between August 9-12, 2025. The incident was discovered on October 30, 2025. Dartmouth notified law enforcement, secured the environment, and offered one year of Experian IdentityWorks. Patches were applied.