Privacy Unpacked

Confirmed breach · 3 breaches on record

AltaMed Health Services data breach

USUnited States · AltaMed Health Services Corporation

AltaMed Health Services (United States) notified the California Attorney General of a data breach on 12 February 2026. The breach began on 27 November 2025, 77 days before it was reported.

Breach reported 12 February 2026

Status
Confirmed breach
People affected
Not reported yet
Reported
12 February 2026
Breach began
27 November 2025
Time to tell
77 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.

Sources

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

Breach reported 13 June 2025

Status
Confirmed breach
People affected
Not reported yet
Reported
13 June 2025
Breach began
5 August 2024
Time to tell
312 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.

Sources

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

Breach reported 29 June 2023

Status
Confirmed breach
People affected
Not reported yet
Reported
29 June 2023
Breach began
29 May 2023
Time to tell
31 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.

Sources

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

If AltaMed Health Services had your data

  1. Look for AltaMed Health Services Corporation’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 AltaMed Health Services Corporation 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 AltaMed Health Services Corporation, 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 AltaMed Health Services

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 21 May 2018
  2. California Attorney General · began 9 January 2019
  3. California Attorney General · began 21 May 2018
  4. California Attorney General

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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.