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Regulator-posted notice

Breach notice filed by Guardant Health, Inc. (April 2024)

Organization named: Guardant Health, Inc. Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Unauthorized Access/Disclosure

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) with a submission date of April 26, 2024.

Organization as reported
Guardant Health, Inc., CA
Entity type as reported
Healthcare Provider
Category as reported
Unauthorized Access/Disclosure
Location of information as reported
Network Server
Submission date
April 26, 2024
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 9940, row:1079)
Archived copy
Held in the private archive (provenance)

The covered entity (CE), Guardant Health, Inc., reported that a workforce member inadvertently made the protected health information (PHI) of 9,309 individuals viewable over the Internet. The PHI involved included names, ages, medical record and identification numbers, and treatment information. The CE notified HHS and the affected individuals. In response to the breach, the CE sanctioned its workforce member and implemented additional technical safeguards to better protect its PHI. OCR provided the CE with technical assistance regarding the HIPAA Breach Notification Rule.

The source's own words, from the revision above.

Figures, per source

  • 9,309 individuals affected (total reported), as reported by the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), source date April 26, 2024, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date at the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals)
  • Observed by BreachRecords (revision 9940)
  • Approved by a reviewer

Organizations linked by a reviewer

  • Guardant Health, Inc. Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, from the HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals), retrieved 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by Guardant Health, Inc. (April 2024). We acknowledge every request within two business days. We reply by email.

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