MalwareHealthcareHealthcareRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedTargetedFinancial accountHealth (basic)Identity (basic)Government IDPHIHighContained

DAVITA INC.

bd_e1166f59c017b825 · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 12, 2025

Filed

Aug 1, 2025

To disclose

16 weeks

Affected

13,404state residents only

Linked

10 filings

Confidence

69%

Full breach record for DAVITA INC. →7 incidents on file

DaVita Inc. reported a ransomware incident affecting Washington residents. Unauthorized access occurred from March 24 to April 12, 2025. The breach exposed PHI, SSNs, and financial data for 13,404 individuals. DaVita engaged forensic experts, notified law enforcement, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d16 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 19 days

discovery → filing · 16 weeks / 111 days

Mar 24, 2025

Begins

Apr 12, 2025

Discovered

Aug 1, 2025

Filed

vs. sector median

+5 wks slower

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteinterlockbd_3622174d2cca4bd72025-04-12 · +111dVerified by operator

Regulatory filings (8) · sorted by filing gap

Montana State AGbd_0dbf28f1535d38bc2025-08-01Verified
Nebraska State AGbd_3ea45d37c7fc59632025-08-01Verified
HHS OCRbd_481b17d7ad14233c2025-08-01Verified by operator
South Carolina State AGbd_5facf976ddce74892025-08-01Verified by operator

Show 4 more filings ↓up to 109d gap

Oregon State AGbd_7bfa0289228386bc2025-08-01Verified
Massachusetts State AGbd_f2d4b9ddac21884f2025-08-01Verified by operator
Texas State AGbd_ebb844d725a949772025-08-04 · +3dVerified
SEC 8-Kbd_497d2fc88c2cbfe22025-04-14 · +109dVerified by operator

Name: DAVITA INC.
norm: davita
Domain: davita.com

Name: DAVITA INC.
norm: davita
Domain: davita.com
Industry: Healthcarellm

Discovered: Apr 12, 2025
Breach occurred: Mar 24, 2025 – Apr 12, 2025
Undetected for: 19 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 5, 2025
Affected individuals: 13,404state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: reported the incident to law enforcement

During the incident: Initiated our incident response protocols
Eradicated the unauthorized party from our systems
Engaged third-party forensic experts to conduct a review of the impacted servers
Reported the incident to law enforcement
Continue to cooperate with them in their investigation
Changes made: Deploying additional security monitoring tools
Enhanced system controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(111 days from discovery to filing)
Compliance flags: WA AG >90dLeak >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 8 states

View merged incident ↗

SEC 8-KApr 14 · first

Montana State AG+109d

Nebraska State AG+109d

HHS OCR+109d

South Carolina State AG+109d

Oregon State AG+109d

Massachusetts State AG+109d

Washington State AG+109d · this page

Texas State AG+112d

Pattern: first filing Apr 14, last Aug 4 (TX) — a 112-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA34207.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 1, 2025
Raw hash: d73526743bea206e7aae710b9965b8c17a04f0eb1a208f87e2fd51bbf6fb09dc

Linked disclosures

Ransomware claims (1)

Regulatory filings (8) · sorted by filing gap

Reporting entityDAVITA INC.

Victim entityDAVITA INC.

Incidentdiscovered Apr 12, 2025

Stated responseInitiated our incident response protocols

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com