Cyber Incident Victim: AssetMark, Inc.
Timeline
Summary
AssetMark, Inc. discovered unauthorized access to login information that led to the exposure of customer files containing names, Social Security numbers, financial account details and government ID numbers, affecting hundreds of thousands of individuals. The breach was detected after suspicious activity was observed on its systems, prompting an investigation that revealed unauthorized access to certain files. Affected individuals are at risk of identity theft and fraud. A national class‑action law firm is investigating potential legal claims on behalf of those whose data was involved in the breach.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 0 motives | 0 techniques |
| Threat Actors | Type | Location |
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| 0 actors | Available to members | Available to members |
Description
On or about May 15 2026 AssetMark Inc. discovered suspicious activity associated with login information and determined that an unauthorized user had accessed and obtained certain files containing customer information. The discovery was made by AssetMark Inc. itself, which provides technology, investment solutions and professional support services to independent financial advisors to help them grow their businesses. The unauthorized access resulted in the compromise of files that held personal data of the company’s customers. The incident was identified on or about the date mentioned and prompted an internal review of the affected systems.
The compromised files may have contained sensitive personal information including names, Social Security numbers, financial account numbers and government‑issued identification numbers. Approximately 570 000 individuals could be affected by the exposure of this data. Individuals who received a data breach notification from AssetMark Inc. may face an increased risk of identity theft and fraud as a result of the disclosed information. AssetMark Inc. continues to describe its core business as assisting independent financial advisors through technology platforms, investment solutions and professional support services.
Edelson Lechtzin LLP, a national class‑action law firm with offices in Pennsylvania and California, is investigating a potential class action on behalf of individuals whose sensitive personal data may have been compromised in the AssetMark Inc. breach. The firm routinely handles class and collective actions involving securities and investment fraud, federal antitrust violations, ERISA employee benefit plans, wage theft and consumer fraud. As part of its investigation the firm will evaluate the rights and potential claims of affected individuals at no cost to them. Contact information for a free case evaluation has been provided: Marc Edelson, Esq., Edelson Lechtzin LLP, 411 S. State Street, Suite N‑300, Newtown, PA 18940; phone 844‑696‑7492 ext. 2; email medelson@edelson‑law.com; website www.edelson‑law.com.
AssetMark Inc. assists independent financial advisors by offering technology, investment solutions and professional support services, and the breach was discovered on or about May 15 2026 affecting roughly 570 000 individuals. Those who received a breach notification may face an increased risk of identity theft and fraud. The investigation by Edelson Lechtzin LLP remains ongoing, and the firm continues to assess potential claims related to the incident.