Marathon Health Data Breach (October 2026): What Was Exposed and What To Do
According to the notice filed with the Texas Attorney General on Oct 30, 2026, Marathon Health reported a data breach. People affected: 5,684,735 people (official total in the Texas Attorney General filing, filed Oct 30, 2026).
Key facts
From 1 official filing- People affected
- 5,684,735
- Official total in the Texas Attorney General filing, filed Oct 30, 2026
- Source: Texas Attorney General, filed Oct 30, 2026
- Incident dates
- Aug 24, 2026
- Source: Texas Attorney General, filed Oct 30, 2026
- Discovered Sep 9, 2026
- Source: Texas Attorney General, filed Oct 30, 2026
- Information exposed
- Social Security number
- Medical information
- Health insurance information
- Date of birth
- Name
- Address
- Source: Texas AG, Oct 30, 2026
- Filed with
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- Texas Attorney General · filed Oct 30, 2026 · 234,534 Texas residents · total 5,684,735 source details
- Free credit monitoring
- No offer is stated in the filings we have. Check your letter.
What to do now
Steps chosen from the information listed in the official filings. Your own letter may list more.
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A credit freeze stops new credit accounts being opened in your name. It is free by law and you can lift it when you need credit: Equifax, Experian and TransUnion.
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An IP PIN stops someone else filing a tax return with your Social Security number. Get one from the IRS at irs.gov.
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Check the Explanation of Benefits (EOB) statements from your insurer for visits, prescriptions or claims you do not recognize, and contact your insurer about anything unfamiliar.
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Scammers often contact people after a breach, pretending to be the organization, a bank or a government agency. Do not give your Social Security number, passwords or codes to anyone who contacts you first.
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You can get free credit reports from all three bureaus at AnnualCreditReport.com, the official site.
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The Federal Trade Commission's IdentityTheft.gov gives you a personal recovery plan.
Is the letter real?
Letters usually list a phone number for questions. We could not find an official copy of the letter, so check that the organization named in your letter appears in the official filings listed below before you call.
Never give your Social Security number, bank details or passwords to someone who contacts you first.
Timeline
Sources
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Texas Attorney General Notice filed Oct 30, 2026Filed as “Marathon Health” · 234,534 Texas residents · total 5,684,735The link opens the agency's list; search it for the organization name.
Last updated Oct 31, 2026. Our summaries are written in our own words from the official filings above. Spotted an error? Report a correction.