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Confirmed breach · 3 breaches on record

AssetMark data breach

USUnited States · AssetMark, Inc.

AssetMark (United States) notified the California Attorney General of a data breach on 26 June 2026. The breach began on 15 May 2026, 42 days before it was reported.

Breach reported 26 June 2026

Status
Confirmed breach
People affected
Not reported yet
Reported
26 June 2026
Breach began
15 May 2026
Time to tell
42 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.

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 California. · Corrections and changes

Breach reported 8 May 2026

Status
Confirmed breach
People affected
570,000 Oregon residents (one state’s count; the total can be higher)
Reported
8 May 2026
Across the state notices
at least 601,445 people (Oregon, Vermont and Texas: each state counts only its own residents)
Breach began
15 May 2026

What was exposed

  • Social Security numbers
  • Government ID numbers
  • Names

What changed since it was first reported

  1. Confirmed breach, 570,000 Oregon residents (Oregon Department of Justice)

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 California, Oregon, Vermont, Texas. · Corrections and changes

Breach reported 8 May 2026

Status
Confirmed breach
People affected
570,000 Oregon residents (one state’s count; the total can be higher)
Reported
8 May 2026
Across the state notices
at least 601,445 people (Oregon, Vermont and Texas: each state counts only its own residents)
Breach began
15 May 2026

What was exposed

  • Social Security numbers
  • Government ID numbers
  • Names

Sources

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

If AssetMark had your data

  1. Look for AssetMark, Inc.’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 AssetMark, Inc. 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 AssetMark, Inc., 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.