HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedData ExfiltratedGovernment IDIdentity (basic)Financial accountHighContained

ASSETMARK, INC.

bd_cb19c05bc1b11d03 · schema v1 · pii pii-v1

Severity

High

Discovered

May 15, 2026

Filed

Jul 8, 2026

To disclose

8 weeks

Affected

1,644state residents only

Linked

11 filings

Confidence

66%

Full breach record for ASSETMARK, INC. →2 incidents on file

AssetMark, Inc. issued a supplemental notice to the Rhode Island Attorney General regarding a data security event discovered on May 15, 2026. An unauthorized user accessed customer files containing names, SSNs, and account numbers via compromised employee credentials. AssetMark notified 1,644 Rhode Island residents starting June 18, 2026, offering 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 8 weeks / 54 days

May 15, 2026

Begins

May 15, 2026

Discovered

Jul 8, 2026

Filed

vs. sector median

1 wks faster

This filing is one of 11 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_b328f99afc4a52512026-06-26 · +12dVerified
Texas State AGbd_30436bcce43994592026-06-18 · +20dVerified
Rhode Island State AGbd_e099e3ab62a709032026-06-15 · +23dVerified
Massachusetts State AGbd_6ed05ad3f644267a2026-06-12 · +26dCandidate

Show 6 more filings ↓up to 27d gap

Washington State AGbd_33f04a386aea24d32026-06-11 · +27dVerified
Oregon State AGbd_6886b6cefdfdb7fd2026-06-11 · +27dVerified
Delaware State AGbd_6af2c69a79abc5b22026-06-11 · +27dVerified
Nebraska State AGbd_7ac3f8543828d6ee2026-06-11 · +27dVerified
New Hampshire State AGbd_c7f8a628cbde3f8a2026-06-11 · +27dVerified
Vermont State AGbd_d0136116688cfee02026-06-11 · +27dVerified

Name: Keesal, Young & Logan
norm: keesal young logan
Domain: kyl.com

Name: ASSETMARK, INC.
norm: assetmark
Industry: Financial Servicesllm

Discovered: May 15, 2026
Breach occurred: May 15, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 18, 2026
Affected individuals: 1,644state-resident count only
Data types: Government IDIdentity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: provided notice of this incident to state regulators, as necessaryprovided notice of this incident to the three major credit reporting agencies: Equifax, Experian, and TransUnion
Initial access: valid_credentials

During the incident: Terminating the unauthorized access
Re-setting employee credentials
Engaging internal and external information security professionals to conduct a forensic investigation
Increasing systems monitoring
Implementing additional security safeguards
Offering credit monitoring and identity theft prevention services at no cost to you for 24 months
Changes made: Re-setting employee credentials
Increasing systems monitoring
Implementing additional security safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(54 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 10 states

View merged incident ↗

Washington State AGJun 11 · first

Oregon State AGJun 11 · first

Delaware State AGJun 11 · first

Nebraska State AGJun 11 · first

New Hampshire State AGJun 11 · first

Vermont State AGJun 11 · first

Massachusetts State AG+1d

Rhode Island State AG+4d

Texas State AG+7d

California State AG+15d

Rhode Island State AG+27d · this page

Pattern: first filing Jun 11 (WA), last Jul 8 (RI) — a 27-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://riag.ri.gov/media/8951/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 8, 2026
Raw hash: dc6e9dd670f6856ceac885921ae7a4c8c7951992b95646b3016f8b2aec2e2073

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityKeesal, Young & Logan

Victim entityASSETMARK, INC.

Incidentdiscovered May 15, 2026

Stated responseTerminating the unauthorized access

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceriag.ri.gov