Landmark Admin, LLC data breach
Landmark Admin, LLC appears in 15 breach notices filed with Rhode Island AG, New Hampshire DOJ, California AG, Washington AG, Iowa AG, SC Consumer Affairs, Oregon DOJ, Delaware DOJ, Maryland AG and Montana DOJ, most recently reported on April 22, 2025.
Also listed as: Landmark Admin, LLC. ( Supplemental ); Landmark Admin, LLC (supplemental letter only); Landmark Admin
Breach notices filed with regulators
| Reported | Filed with | Breach date(s) | People affected | Data involved | Source |
|---|---|---|---|---|---|
| Apr 22, 2025 | Rhode Island AG | Not listed | Not listed | Not listed | Notice ↗ |
| Apr 14, 2025 | New Hampshire DOJ | Not listed | Not listed | Not listed | Notice ↗ |
| Apr 11, 2025 | California AG | May 13, 2024, Jun 17, 2024 | Not listed | Not listed | California AG list ↗ |
| Apr 11, 2025 | Washington AG | May 13, 2024 – Jun 17, 2024 | 11,691 Washington residents | Full Date of BirthMilitary ID NumberPassport NumberHealth Insurance Policy or ID NumberMedical InformationNameSocial Security NumberDriver's License or Washington ID Card NumberFinancial & Banking Information | Washington AG list ↗ |
| Apr 10, 2025 | Iowa AG | Not listed | Not listed | Not listed | Notice ↗ |
| Oct 24, 2024 | SC Consumer Affairs | Not listed | 55,488 South Carolina residents | Not listed | Notice ↗ |
| Oct 23, 2024 | California AG | May 13, 2024 | Not listed | Not listed | California AG list ↗ |
| Oct 23, 2024 | Washington AG | May 13, 2024 – Jun 17, 2024 | 4,795 Washington residents | Financial & Banking InformationFull Date of BirthPassport NumberHealth Insurance Policy or ID NumberMedical InformationNameSocial Security NumberDriver's License or Washington ID Card Number | Washington AG list ↗ |
| Oct 23, 2024 | Oregon DOJ | May 13, 2024 – Jun 17, 2024 | Not listed | Not listed | Oregon DOJ list ↗ |
| Oct 23, 2024 | Delaware DOJ | May 13, 2024 – Jun 17, 2024 | 5,061 Delaware residents | Not listed | Notice ↗ |
| Aug 15, 2024 | Maryland AG | Not listed | 17,225 Maryland residents | NameSocial Security numberDate of birthDriver's license or state IDPassport numberFinancial account informationMedical informationHealth insurance informationTaxpayer IDAddress | Notice ↗ |
| Jun 27, 2024 | Montana DOJ | May 13, 2024 – May 14, 2024 | 2,987 Montana residents | Not listed | Notice ↗ |
| Jun 24, 2024 | Delaware DOJ | May 13, 2024 – Jun 17, 2024 | Not listed | Not listed | Notice ↗ |
| Jun 12, 2024 | SC Consumer Affairs | Not listed | 55,488 South Carolina residents | Not listed | Notice ↗ |
| Jun 12, 2024 | Maryland AG | Not listed | Not listed | NameSocial Security numberDate of birthDriver's license or state IDFinancial account informationHealth insurance informationTaxpayer IDAddress | Notice ↗ |
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 Landmark Admin, LLC 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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