CALIFORNIAAccidentalHealthcareHealthcareMisdeliveryBusiness Associate (HIPAA)Customer Data InvolvedPHIHealth (basic)Identity (basic)MediumContained

GUARDANT HEALTH, INC.

bd_dc3c65f1e089173f · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Apr 26, 2024

To disclose

—

Affected

9,309

Linked

5 filings

Confidence

69%

Full breach record for GUARDANT HEALTH, INC. →4 incidents on file

Guardant Health, Inc. reported to HHS on 2024-04-26 a Unauthorized Access/Disclosure affecting 9309 individuals. Breached information located on Network Server. A workforce member inadvertently made PHI (names, ages, medical record numbers, treatment info) viewable over the Internet. The entity notified HHS and individuals, sanctioned the employee, and implemented technical 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

Apr 26, 2024

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 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Illinois State AGbd_3c733c8d7ae6714d2024-05-01 · +5dVerified
Vermont State AGbd_0cc35de939dca4022024-05-03 · +7dVerified
Montana State AGbd_667d31d8ec325fca2024-05-03 · +7dVerified
California State AGbd_bf30833a7e61dbb32024-05-03 · +7dVerified

Name: GUARDANT HEALTH, INC.
norm: guardant health
Domain: guardanthealth.com
Industry: Health Care Services

Name: GUARDANT HEALTH, INC.
norm: guardant health
Domain: guardanthealth.com
Industry: Health Care Services
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 9,309nationwide
Data types: PHIHealth (basic)Identity (basic)
HHS breach type: Unauthorized access or disclosure
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1530 Data from Cloud Storage Object
Threat actor: Internal
Regulator citations: OCR provided the CE with technical assistance regarding the HIPAA Breach Notification Rule

During the incident: Sanctioned its workforce member
Implemented additional technical safeguards to better protect its PHI
Notified HHS and the affected individuals
Changes made: Implemented additional technical safeguards to better protect its 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.

Filing propagation · 5 filings · 4 states

View merged incident ↗

HHS OCRApr 26 · first · this page

Illinois State AG+5d

Vermont State AG+7d

Montana State AG+7d

California State AG+7d

Pattern: first filing Apr 26 (CA), last May 3 (CA) — a 7-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://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: Apr 26, 2024
Raw hash: fb4bab49c2b0e0974a8484d57a2701f6dedd512a3c24ba6cb5271948e1c7c442

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

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Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityGUARDANT HEALTH, INC.

Victim entityGUARDANT HEALTH, INC.

IncidentUnauthorized Access

Stated responseSanctioned its workforce member

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing