Quest Diagnostics data breach
Quest Diagnostics appears in 7 breach notices filed with Maryland AG, California AG, Montana DOJ and Oregon DOJ, most recently reported on October 25, 2024.
Also listed as: Quest Diagnostics, Inc.; Quest Diagnostics Incorporated
Breach notices filed with regulators
| Reported | Filed with | Breach date(s) | People affected | Data involved | Source |
|---|---|---|---|---|---|
| Oct 25, 2024 | Maryland AG | Not listed | 20 Maryland residents | NameMedical informationHealth insurance informationAddress | Notice ↗ |
| Nov 16, 2021 | California AG | Oct 29, 2021 | Not listed | Not listed | California AG list ↗ |
| Nov 16, 2021 | Montana DOJ | Oct 29, 2021 | 6 Montana residents | Not listed | Notice ↗ |
| Jul 13, 2019 | Montana DOJ | Aug 1, 2018 – Mar 30, 2019 | 7,488 Montana residents | Not listed | Notice ↗ |
| Dec 12, 2016 | California AG | Nov 26, 2016 | Not listed | Not listed | California AG list ↗ |
| Dec 12, 2016 | Oregon DOJ | Nov 26, 2016 | 34,055 Oregon residents | Not listed | Oregon DOJ list ↗ |
| Dec 19, 2014 | California AG | Nov 17, 2014 | Not listed | Not listed | California AG list ↗ |
Each row is a notice as published by the agency. For state lists, the number affected counts only that state's residents; HHS lists the total reported. SEC rows are Form 8-K Item 1.05 filings, which usually don't give a count. A notice does not mean a settlement exists, and a settlement may cover a different incident than a given notice.
Is there a settlement?
We don't track an open class-action settlement for Quest Diagnostics right now. Settlements usually come months or years after a breach. Get an email when new settlements are announced.
What you can do now
- Read the notice letter if you got one. It says what data was involved and may offer free credit monitoring with an enrollment deadline.
- Consider a free credit freeze at Equifax, Experian and TransUnion, especially if your Social Security number was involved.
- Change reused passwords and turn on two-factor authentication.
- Watch your bank, card and insurance statements for activity you don't recognize.
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