DAVITA INC. — March 2025 breach
Clustered 10 records across 9 jurisdictions: 9 filings and 1 leak-site claim · filing window Apr 14, 2025 → Aug 4, 2025 (dated filings only). View entity profile → Other incidents for this victim →
incident inc_19657f8388ea4bd3 · merged by deterministic · confidence 100%
Litigation Timing
SupplementalDiscovered → first regulatory filing
Range of discovered_at dates across filings
Days between the first sighting of the earliest-seen leak-site claim and the first regulatory filing. Measured from when the aggregator first saw the post, not the crew's own (often earlier) date. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.
Time between earliest and latest filing
Not recorded for this incident
Materiality delta · SEC filing delay
Sensitive data
identity_governmentIncident timeline
Dashed segments are unestablished, not zero — they fill in as filings merge into this incident. Filings without a recorded filing day, or recorded as filed before the breach they report began, are not placed on this rail.
Member cascade — every filing and leak-site claim in this incident
- APR 12Leak siteinterlock postfirst record · attacker claim · unverifiedoperator-confirmedday 0
- APR 14SEC 8-KSEC 8-K noticeno count statedoperator-confirmed+2d
- AUG 1HHS OCRHHS OCR noticestates nationwide total 2,689,826operator-confirmed+111d
- AUG 1SC AGSC AG notice11,570 SC residentsoperator-confirmed+111d
- AUG 1OR AGOR AG noticestates nationwide total 915,952operator-confirmed+111d
- AUG 1WA AGWA AG notice13,404 WA residentsoperator-confirmed+111d
- AUG 1MA AGMA AG notice7,829 MA residentsoperator-confirmed+111d
- AUG 1NE AGNE AG noticefiling day not on record · no count statedauto-linked—
- AUG 1MT AGMT AG notice761 MT residentsoperator-confirmed+111d
- AUG 4TX AGTX AG noticemost recent · states nationwide total 915,952operator-confirmed+114d
- Watching for additional filings — new sources merge into this incident automatically.
Roll-up facts — reconciled across members
- Breach window
- Mar 24, 2025 – Apr 12, 2025 SC AG
- Discovered
- Apr 12, 2025· 19d undetected SEC 8-K + SC AG + OR AG +4
- Data types
- Financial account · Health (basic) · Identity (basic) · Government ID · PHI HHS OCR + SC AG + WA AG +4
- Attack vector
- Ransomware SEC 8-K
Each fact cites the member filing that establishes it; when filings conflict, every value shows with its source.
Count reconciliation
per-state reported counts
Nationwide (stated in a filing)
2,689,826
Sum of filed state slices
115,304· 4.3% of stated
96% of the stated total lives in states whose filings carry no count — the dashed share shrinks as filings land.
State AGs report only their own residents; teal bars show each state's reported slice. The gray US row is the nationwide total reported in a linked filing.
Evidence ladder — rungs this incident occupies
Attacker assertion only. Establishes: claim date, group, alleged victim.
No press coverage linked yet.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
Merge provenance
- Method
- deterministic
- Confidence
- 1.00 · above the 0.85 auto-merge floor
- Reviewed
- operator-reviewed Aug 22, 2026 · at least one link edge was human-adjudicated
- Audit
- Every link edge records its method, confidence and model + prompt versions (100% is the strongest edge).
Merges are reversible — a wrong link can be detached with its audit trail intact. How merging works.
Filing velocity
Spread
112 days
Cadence
~1 / 16d
vs. multi-state median
18.7× slower
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. This page states only what the linked filings agree on; each filing's own account stays on its own record, linked from the timeline below.
The weekly clock on records like this one
The Disclosure Clock is a weekly briefing on what landed in the disclosure record, and the gap between the criminals' post and the regulator's filing — measured on the whole record, with the method shown.
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