HackingHealthcareHealthcareData ExfiltratedTargetedIdentity (basic)Government IDPHIHealth (basic)Financial accountMediumContained

DAVITA INC.

bd_0dbf28f1535d38bc · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 12, 2025

Filed

Aug 1, 2025

To disclose

16 weeks

Affected

761state residents only

Linked

10 filings

Confidence

65%

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

DaVita Inc. notified Montana residents of a data breach affecting dialysis lab databases. Unauthorized access occurred March 24–April 12, 2025. Data exposed included PII (SSN, DOB, address), PHI (health conditions, lab results), and financial data. DaVita engaged forensic experts, notified law enforcement, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

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

Nebraska State AGbd_3ea45d37c7fc59632025-08-01Verified
HHS OCRbd_481b17d7ad14233c2025-08-01Verified by operator
South Carolina State AGbd_5facf976ddce74892025-08-01Verified by operator
Oregon State AGbd_7bfa0289228386bc2025-08-01Verified

Show 4 more filings ↓up to 109d gap

Washington State AGbd_e1166f59c017b8252025-08-01Verified by operator
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: 761state-resident count only
Data types: Identity (basic)Government IDPHIHealth (basic)Financial account
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: reported the incident to law enforcement
Initial access: exploit_public_facing

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: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 8 states

View merged incident ↗

SEC 8-KApr 14 · first

Nebraska State AG+109d

HHS OCR+109d

South Carolina State AG+109d

Oregon State AG+109d

Washington State AG+109d

Massachusetts State AG+109d

Montana 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://dojmt.gov/wp-content/uploads/2025/08/Consumer-notification-letter-13.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: 8ff167fcc2eb0f35682993ba60943947ec72b63c05d77724f4917ed368583c57

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov