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Confirmed breach

Oklahoma Tax Commission data breach

USUnited States · OK

Oklahoma Tax Commission (OK, United States) notified the Texas Attorney General, the Indiana Attorney General and the California Attorney General of a data breach on 27 March 2026. It told the states about 4,177 Texas residents; the total can be higher. Exposed: Social Security numbers and Names. The breach began on 5 July 2024, 630 days before it was reported.

Status
Confirmed breach
People affected
4,177 Texas residents (one state’s count; the total can be higher)
Reported
27 March 2026
Across the state notices
at least 4,303 people (Texas and Indiana: each state counts only its own residents)
Breach began
5 July 2024
Time to tell
630 days (the median in California’s notices over the last year: 154 days)

What was exposed

  • Social Security numbers
  • Names

What the letter says

We have not read this letter yet.

Got a letter or email about this breach? Check it is real →

Read the letter (PDF), as filed with the California Attorney General.

Sources

Official notices are read by code from the regulator’s own register. More notices to Texas, Indiana, California. · Corrections and changes

If Oklahoma Tax Commission had your data

  1. Look for Oklahoma Tax Commission’s own notice or letter: it should say what of yours was involved. Keep it.
  2. An ID number cannot be changed, so lock it: a credit freeze or fraud alert in the US, a credit warning (kreditadvarsel) on borger.dk in Denmark, Cifas protective registration in the UK.
  3. Expect scams that use your details: calls, texts or emails pretending to be Oklahoma Tax Commission, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

One email to confirm first. We use your address only for this alert, and one click deletes it.

More breaches in United States

  1. Quantum HealthUSUnited States · OH · 28 October 2026 Social Security numbersHealth insurance detailsHealth and medical information+1 273.1KTexas residents
  2. Indico Data SolutionsUSUnited States · MA · 28 October 2026 Social Security numbersDriver’s license numbersGovernment ID numbers+6 2.1KTexas residents
  3. Apollo Asset ManagementUSUnited States · NY · 28 October 2026 Social Security numbersDriver’s license numbersGovernment ID numbers+3 1.5KTexas residents
  4. DBA Tanya AlexanderUSUnited States · TX · 28 October 2026 NamesAddresses 417Texas residents
  5. DMW Retail Enterprises LLC dba Kult of Athena (KOA)USUnited States · IL · 28 October 2026 Financial account and card detailsNames 306Texas residents

Every breach in United States →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.