MalwareHealthcareTechnologyHealthcareRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainRansom DemandedFinancial accountFinancial credentialsHealth (basic)Identity (basic)Government IDPHICriticalContained

CHANGE HEALTHCARE INC.

bd_dc48a09555e80a91 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Feb 21, 2024

Filed

Aug 3, 2024

To disclose

23 weeks

Affected · nationwide

192,700,0003,121,209 in this filing

Linked

14 filings

Confidence

69%

Full breach record for CHANGE HEALTHCARE INC. →7 incidents on file

Change Healthcare Inc. reports a ransomware attack occurring Feb 17-20, 2024, discovered Feb 21, 2024. Incident impacted approx. 192.7M individuals nationwide, including 3.1M in Washington. Data exposed included PHI, SSNs, DOBs, and financial data. Notices mailed starting June 20, 2024. This filing is a supplemental update dated July 31, 2025.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d23 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 · 4 days

discovery → filing · 23 weeks / 164 days

Feb 17, 2024

Begins

Feb 21, 2024

Discovered

Aug 3, 2024

Filed

vs. sector median

+11 wks slower

This filing is one of 14 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_6999730badb3aebb2024-08-03Verified
Oregon State AGbd_788f5843714453cb2024-08-03Verified
Massachusetts State AGbd_969ae8733a313abf2024-08-03Verified
Montana State AGbd_20fef244fbf67f712024-08-02 · +1dVerified

Show 6 more filings ↓up to 90d gap

New Hampshire State AGbd_546b3d03391ed1822024-08-02 · +1dVerified
South Carolina State AGbd_6c170b3ed5a97da52024-08-05 · +2dVerified
Illinois State AGbd_475102911ae1328e2024-08-01 · +2dVerified
Vermont State AGbd_1467986906075ca02024-07-29 · +5dVerified
Oregon State AGbd_1091c4bb67ec440a2024-09-16 · +44dVerified
Illinois State AGbd_99990548386b282d2024-11-01 · +90dVerified

Showing first 10 of 13 linked disclosures.

Name: CHANGE HEALTHCARE INC.
norm: change healthcare
Domain: changehealthcare.com

Name: CHANGE HEALTHCARE INC.
norm: change healthcare
Domain: changehealthcare.com
Industry: HealthcarellmTechnologyllm

Discovered: Feb 21, 2024
Breach occurred: Feb 17, 2024 – Feb 20, 2024
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 20, 2024
Affected individuals: 192,700,000state + nationwide
Data types: Identity (basic)Government IDHealth (basic)Financial accountFinancial credentials
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthMilitary ID numberPassport numberHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 ChannelT1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Submitted Breach Notification Update to Washington Attorney General's Office
Initial access: exploit_public_facing

During the incident: Hired a special team to help us
Called law enforcement
Turned off CHC’s systems to help protect our customers and their individuals
Offering free credit monitoring and identity theft protection services for 2 years
Changes made: Making our computer systems even stronger than before
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 23 weeks(164 days from discovery to filing)
Compliance flags: WA AG >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 · 11 filings · 9 states

View merged incident ↗

Vermont State AGJul 29 · first

Illinois State AG+3d

Montana State AG+4d

New Hampshire State AG+4d

California State AG+5d

Oregon State AG+5d

Massachusetts State AG+5d

Washington State AG+5d · this page

South Carolina State AG+7d

Oregon State AG+49d

Illinois State AG+95d

Pattern: first filing Jul 29 (VT), last Nov 1 (IL) — a 95-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 13 — the full spread may be wider.

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/BreachA30075.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 3, 2024
Raw hash: ac094006c4ba58e1605d3c0be673e66496432f3b749992295be550413556aee3

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityCHANGE HEALTHCARE INC.

Victim entityCHANGE HEALTHCARE INC.

Incidentdiscovered Feb 21, 2024

Stated responseHired a special team to help us

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com