Quest Diagnostics

Organization

Quest Diagnostics

Source

California AG · source record

Date reported

Dec 12, 2016

Date(s) of breach

Saturday, November 26, 2016

Residents affected

Not published by this source

Data exposed

Social Security number Financial / bank account Medical / health information Date of birth Phone number Postal address Name

Notice letter

Sample notice (PDF)

Discovered

Nov 28, 2016, as stated in the letter

"3 Giralda Farms Madison, New Jersey 07940 QuestDiagnostics.com December 12, 2016 [Patient Name] [Patient Address line one] [Patient Address line two] Dear [Patient Name] : Quest Diagnostics regrets to notify you of a breach of your Prote..."

Days to notice

14 days from discovery (Nov 28, 2016) to the California record (Dec 12, 2016). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).

Third party

The letter attributes the incident to a vendor or service provider

First seen by BreachTally

2026-10-30 16:18 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.