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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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Kaiser Foundation Hospitals data breach (2024) · DisclosureLens

All incidents View linkage analytics →

Merged incident · 2 filings

Kaiser Foundation Hospitals

Clustered 2 filings across 1 jurisdiction · filed Nov 1, 2024. View entity profile → Other incidents for this victim →

✓ 0 discrepancies — filings agreeMerge100%

Confirmed breach. Intrusion Aug 1, 2024–Sep 30, 2024, discovered Sep 3, 2024 — the first regulatory filing landed 59 days later. 44,600 individuals reported across the linked filings.

incident inc_cf9e10fb1b134baa · merge_method deterministic · confidence 100%

Litigation Timing

Notification delay

59days

Discovered → first regulatory filing

Filing span

0days

Time between earliest and latest filing

Not recorded for this incident

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

Regulatory clocksHIPAA✓ HHS notifiedFull clock table in Litigation Timeline

HHS OCRState AGConfirmedLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedmoderate sensitivity

Affected (total reported)

44,600

Data types

PHI · Health (basic) · Identity (basic)

Jurisdictions

Linked filings

HHS OCR · State AG

Timeline

Earliest sighting first · deep chronology in Litigation Timeline

Breach window
Aug 1, 2024 → Sep 30, 2024
When the intrusion reportedly occurred, per the linked filings
33 days
Breach discoveredletter-grounded
Sep 3, 2024
Reported by CALIFORNIA AG filing
59 days
🐻California State AGFirst filing
Filed Nov 1, 2024bd_32c7eed1cbbbeb93
Kaiser Permanente discovered on September 3, 2024, that an unauthorized party accessed the email accounts of two workforce members. The incident occurred between August and September 2024. Affected data included protected health information (PHI) such as names, dates of birth, medical record numbers, and medical information. Social Security numbers and credit card numbers were not involved. Kaiser terminated access and reset passwords.
CALIFORNIAHHS OCRMost recentlinked via same-victim cross-source · 100%
Filed Nov 1, 2024bd_a1be27e2d6715722
Kaiser Foundation Hospitals reported to HHS on 2024-11-01 a Hacking/IT Incident affecting 44,600 individuals. Breached information located on Email. Employees were targeted by an email phishing scheme compromising demographic and clinical PHI. Response included password changes, technical safeguards, and policy revisions.
Affected (this filing): 44,600

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