CALIFORNIAHackingHealthcareHealthcarePHIHealth (basic)Identity (basic)Medium

Cornerstone Care Center

bd_90350c37e7da9de0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

May 7, 2026

To disclose

—

Affected

1,510

Linked

2 filings

Confidence

70%

Full breach record for Cornerstone Care Center →

Sanger Skilled Care, LLC dba Cornerstone Care Center reported to HHS on 2026-05-07 a Hacking/IT Incident affecting 1510 individuals. Breached information located on Electronic Medical Record, Network Server.

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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

May 7, 2026

Filed

—

Corroborated · see linked filings

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

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

California State AGbd_c4d7b6cdaf74cc3d2026-05-07Verified

Name: Cornerstone Care Center
norm: cornerstone care center
Domain: cornerstonecarecenter.com
Industry: Health Care Services

Name: Cornerstone Care Center
norm: cornerstone care center
Domain: cornerstonecarecenter.com
Also named: Sanger Skilled Care, LLCdba oflegal entity
Cornerstone Care Centerdba oftrade name
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 1,510nationwide
Data types: PHIHealth (basic)Identity (basic)
HHS breach type: Hacking / IT incident
Where the data lived: Electronic medical recordNetwork server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified HHS

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.

Filing propagation · 2 filings

View merged incident ↗

California State AGMay 7 · first

HHS OCRMay 7 · first · this page

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: May 7, 2026
Raw hash: 0ade56c6f6c3b55d217d70c0adcb1fdeb7dfdf4830730ec238ce39c98db1d012

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Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCornerstone Care Center

Victim entityCornerstone Care Center

IncidentUnauthorized Access

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing