Quest Diagnostics Incorporated
- Aliases / services
- Quest Diagnostics / Quest Diagnostics Incorporated
- Official website
- https://www.questdiagnostics.com/
Sources identifying the operating company
Each response applies only to its stated service scope. “Not listed” does not mean unpatched or unaffected.
Response status by service
internal information about current and former employees
- Response status
- Not listed
- Response information checked
- 2026-10-30
Current re-audit: Related incident verified; PHP connection not stated · Research date: 2026-10-30
On October 29, 2021, an employee accidentally emailed an internal distribution list a spreadsheet containing employee data. Names, Social Security and employee IDs were involved; this notice does not describe an external patient-data hack.
Scope: A PHP connection and response to the current PHP vulnerabilities are not listed.
What users should do
Review credit reports and statements and report unfamiliar accounts or charges to credit bureaus or financial institutions. The historical monitoring enrollment deadline was February 28, 2022.
Official service URL
Source URLs
- Official operator evidencehttps://www.questdiagnostics.com/our-company/privacy/data-privacy-frameworkService and operation documentation
- 2021-11-16 official noticehttps://oag.ca.gov/system/files/EXPERIAN_H0833_Quest%20Diagnostics_L01_SAS_1.pdfService and operation documentation
Related official sources
- Official operator evidenceOfficial information directoryIdentifies Quest Diagnostics Incorporated and the relevant scope.
- 2021-11-16 official noticeOfficial notice; link to this PHP incident unconfirmedConfirms incident scope and guidance for affected people.
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