AssetMark

Disclosed Jun 11, 2026570,000 affectedConfirmed

What is known

People affected	570,000 (as reported by the organization)
Disclosed	Jun 11, 2026
Discovered	May 15, 2026
Happened	May 15, 2026
Attack	Hacking
Data exposed	NamesSocial Security numbersGovernment IDs
Sector	Finance · US
Status	Confirmed

Sources

Official noticeoag.ca.gov

California Attorney General breach notice: AssetMark

Official noticeatg.wa.gov

Washington Attorney General breach notice: AssetMark

Official noticeattorneygeneral.delaware.gov

Notice letter filed with the Delaware DOJ: AssetMark

Official noticejustice.oregon.gov

Oregon DOJ breach notice: AssetMark

Official noticeoag.my.site.com

Texas Attorney General data security breach report BR-0005113: AssetMark

Official noticeago.vermont.gov

Vermont Attorney General breach report: AssetMark

Notices filed

Residents of WAJun 11

Washington AG15,468 people

Residents of DEJun 11

Delaware DOJ2,663 people

Residents of ORJun 11

Oregon DOJ570,000 people

Residents of VTJun 11

Vermont AG1,643 people

Residents of TXJun 18

Texas AG29,802 people

Residents of CAJun 26

California AGCount not stated

History of this record

data_types2026-09-25

["names","ssn"] to ["names","ssn","government-id"]by backfillSource

source2026-09-25

empty to https://oag.my.site.com/datasecuritybreachreport/apex/DataSecurityReportsPageby backfillSource

data_types2026-09-25

[] to ["names","ssn"]by backfillSource

records_basis2026-09-25

empty to organizationby backfillSource

records2026-09-25

empty to 570000by backfillSource

sector2026-09-25

other to financeby backfillSource

attack2026-09-25

unknown to hackingby backfillSource

disclosed2026-09-25

2026-06-26 to 2026-06-11by backfillSource

discovered2026-09-25

empty to 2026-05-15by backfillSource

Added2026-09-25

First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

Everything about AssetMark