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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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Sierra Management Group data breach (2026) · DisclosureLens

All incidents View linkage analytics →

Merged incident · 2 filings

Sierra Management Group

Clustered 2 filings across 2 jurisdictions · filing window Mar 7, 2026 → Jun 7, 2026. View entity profile → Other incidents for this victim →

✓ 0 discrepancies — filings agreeMerge62%

Confirmed breach. 1,279 individuals reported across the linked filings.

incident inc_753437f3c6d64d00 · merge_method deterministic · confidence 62%

Litigation Timing

Leak precedence

92days

Gap between first leak claim and first regulatory filing

Filing span

92days

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 >90dFull clock table in Litigation Timeline

Leak SiteHHS OCRConfirmedLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedgenesis

Affected (total reported)

1,279

Data types

—

Jurisdictions

Linked filings

Leak Site · HHS OCR

Timeline

Earliest sighting first · deep chronology in Litigation Timeline

GLOBALClaimed by GenesisFirst sightinglinked via multi-signal match · 100%
Posted to leak site Mar 7, 2026bd_f0c920d4a2887d2d
Provides comprehensive medical practice management
92 days
CALIFORNIAHHS OCRMost recentLeaked → filing gap · 3 molinked via multi-signal match · 100%
Filed Jun 7, 2026bd_7441c426ff9c8eb2
Sierra Management Group reported to HHS on 2026-06-07 a Hacking/IT Incident affecting 1279 individuals. Breached information located on Network Server. Business associate present.

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.

Affected (this filing): 1,279

Leak >90dHHS notified