MARYLANDHackingHealthcareHealthcarePHIHealth (basic)Identity (basic)Government IDCriticalContained

Centers for Medicare & Medicaid Services

bd_a9728c63838d92de · schema v1 · pii pii-v1

Severity

Critical

Discovered

—

Filed

Jul 28, 2023

To disclose

—

Affected

2,342,357

Confidence

69%

Full breach record for Centers for Medicare & Medicaid Services →4 incidents on file

Centers for Medicare & Medicaid Services reported to HHS on 2023-07-28 a Hacking/IT Incident affecting 2,342,357 individuals. Breached information located on Network Server. A business associate's software application exposed PHI including names, DOBs, SSNs, and diagnoses. The CE provided credit monitoring and the BA implemented security safeguards.

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HIPAA clock✓ HHS notified

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Jul 28, 2023

Filed

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2,342,357 affectedView incident

Name: Centers for Medicare & Medicaid Services
norm: centers for medicare medicaid
Domain: cms.gov
Industry: Insurance — Health

Name: Centers for Medicare & Medicaid Services
norm: centers for medicare medicaid
Domain: cms.gov
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 2,342,357nationwide
Data types: PHIHealth (basic)Identity (basic)Government ID
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Health planBusiness associate involved
Attack vector: Unauthorized Access
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: External
Regulator citations: The CE notified HHS

During the incident: Provided complimentary credit monitoring services
BA implemented additional administrative, technical, and security safeguards to better protect PHI
Changes made: BA implemented additional administrative, technical, and security safeguards to better protect PHI
Source: Quoted from the filing itself, not independently verified.

Compliance flags: HHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

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://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Jul 28, 2023
Raw hash: 4d12d5d1461d46e0178e00821f3c12fa8506c81a0eeb64a1cb910fb97fd17f61

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Reporting entityCenters for Medicare & Medicaid Services

Victim entityCenters for Medicare & Medicaid Services

IncidentUnauthorized Access

Stated responseProvided complimentary credit monitoring services

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing