Clustered 3 filings across 3 jurisdictions · filing window Jun 23, 2023 → Jul 25, 2023. View entity profile → Other incidents for this victim →
incident inc_51ed643a09aa414b · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA MT 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
Earliest sighting first · deep chronology in Litigation Timeline
May 29, 2023
When the intrusion reportedly occurred, per the linked filings
May 31, 2023
Reported by VERMONT AG, CALIFORNIA AG filings
The Johns Hopkins University and Health System notified individuals of a data breach involving the MOVEit file-transfer software. An unauthorized party accessed a server on May 29, 2023, downloading personal information including names, SSNs, and dates of birth. JHU engaged forensic investigators, disconnected the server, and provided two years of credit monitoring to affected individuals.
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.
John Hopkins University and The John Hopkins Health System Corporation reported a data breach to the Montana Attorney General. The breach was reported on 2023-07-21. The breach occurred on 5/29/2023. 66 Montana residents were affected.
Affected (this filing): 66
Johns Hopkins University and Health System experienced a data breach via a vulnerability in third-party MOVEit software. An unauthorized party accessed a server on May 29, 2023, and downloaded documents containing personal information. The incident was discovered on May 31, 2023. The organization disconnected the affected server, engaged forensic investigators, and is offering credit monitoring to affected individuals.