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Structured extracts of public breach disclosures — regulator filings (SEC, HHS, state AGs, EU DPAs) alongside threat-actor leak-site claims and press reports. SEC and HHS filings render inline from the originating regulator’s public record under the fair report privilege; other sources link out to the source URL. AI-extracted with full per-record audit trail (model, prompt version, confidence).

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Medstar Health, Inc. data breach (2025) · DisclosureLens

All incidents View linkage analytics →

Merged incident · 2 filings

MEDSTAR HEALTH, INC.

Clustered 2 filings across 2 jurisdictions · filing window Oct 4, 2025 → Dec 3, 2025. View entity profile → Other incidents for this victim →

✓ 0 discrepancies — filings agreeMerge100%

Confirmed breach. 64,332 individuals reported across the linked filings.

incident inc_ea61c68cafea4cc7 · merge_method deterministic · confidence 100%

Litigation Timing

Leak precedence

59days

Gap between first leak claim and first regulatory filing

Filing span

59days

Time between earliest and latest filing

Not recorded for this incident

Discovery variance · Materiality delta · SEC filing delay — no SEC 8-K in this cluster; needs two dated filings.

Regulatory clocksLeak gap⏱ Leak >30dFull clock table in Litigation Timeline

Leak SiteHHS OCRConfirmedLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedrhysida

Affected (total reported)

64,332

Data types

—

Jurisdictions

Linked filings

Leak Site · HHS OCR

Timeline

Earliest sighting first · deep chronology in Litigation Timeline

GLOBALClaimed by RhysidaFirst sighting
Posted to leak site Oct 4, 2025bd_d4e423307a076203
Medstar Health
59 days
MARYLANDHHS OCRMost recentLeaked → filing gap · 59dlinked via shared-victim match · 100%
Filed Dec 3, 2025bd_bb6fa4d19ad0d2a6
MedStar Health, Inc. reported to HHS on 2025-12-03 a Hacking/IT Incident affecting 64332 individuals. Breached information located on Network Server.
Affected (this filing): 64,332
Leak >30d

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.

HHS notified