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Confirmed breach

CareSource data breach

USUnited States

CareSource (United States) notified the California Attorney General and the Washington Attorney General of a data breach on 28 August 2023. It told the states about 581 Washington residents; the total can be higher. The breach began on 31 May 2023, 89 days before it was reported.

Status
Confirmed breach
People affected
581 Washington residents (one state’s count; the total can be higher)
Reported
28 August 2023
Breach began
31 May 2023
Time to tell
89 days (the median in California’s notices over the last year: 154 days)

What was exposed

The register’s list does not say what was exposed; the notice it links to (under Sources) usually does.

Before the notice: the ransomware gang Cl0p named CareSource on its leak site on 29 June 2023, 60 days before this was reported. Matched by the organisation’s name: the notice itself does not say who the attacker was.

What changed since it was first reported

  1. Confirmed breach, 581 Washington residents (Washington Attorney General)

Sources

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

If CareSource had your data

  1. Look for CareSource’s own notice or letter: it should say what of yours was involved. Keep it.
  2. The register’s list does not say what was exposed; the notice it links to (under Sources) usually does. If CareSource has a password of yours, change it now to be safe.
  3. Expect scams that use your details: calls, texts or emails pretending to be CareSource, 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.

Earlier breaches at CareSource

From the official registers’ and Have I Been Pwned’s full histories. A name match: check the notice to be sure it is the same company.

  1. California Attorney General · began 27 April 2022

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  1. Quantum HealthUSUnited States · OH · 28 October 2026 Social Security numbersHealth insurance detailsHealth and medical information+1 273.1KTexas residents
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  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.