Landmark Admin, LLC

Landmark Admin, LLC notified California AG on Oct 23, 2024 of a data breach, which occurred on May 13, 2024. Data exposed: Social Security number, Driver's license / state ID, Passport number, Financial / bank account, Medical / health information, Health insurance, Date of birth, Usernames / passwords, Email address, Tax ID / EIN / ITIN, Phone number, Postal address, Name.

All 4 filings by Landmark Admin, LLC, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization: Landmark Admin, LLC
Source: California AG · source record
Date reported: Oct 23, 2024
Date(s) of breach: Monday, May 13, 2024
Residents affected: Not published by this source
Data exposed: Social Security number Driver's license / state ID Passport number Financial / bank account Medical / health information Health insurance Date of birth Usernames / passwords Email address Tax ID / EIN / ITIN Phone number Postal address Name
Notice letter: Sample notice (PDF)
Discovered: Jul 24, 2024, as stated in the letter
"The forensic investigation concluded on or about July 24, 2024, and determined that there was unauthorized access to Landmark’s network and data was encrypted and exfiltrated from its system."
Days to notice: 91 days from discovery (Jul 24, 2024) to the California record (Oct 23, 2024). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82). Over the statutory period
Offered in the letter: 12 months of credit or identity monitoring through Experian
Third party: The letter attributes the incident to a vendor or service provider
First seen by BreachTally: 2026-10-30 15:39 UTC

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

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Other filings by Landmark Admin, LLC

Organization	Source	State	Reported	Residents affected	Data exposed
Landmark Admin, LLC	California AG	CA	Apr 11, 2025	Not published	Name
Landmark Admin, LLC	Oregon DOJ	OR	Oct 23, 2024	Not published	Not stated
Landmark Admin, LLC	Delaware DOJ	DE	Oct 23, 2024	5,061	In the letter (PDF)

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.