AssetMark, Inc.

Summary

AssetMark, Inc. discovered suspicious activity associated with login information, resulting in an unauthorized user accessing and obtaining certain files containing customer information. The exposed data may include names, Social Security numbers, financial account information, and government identification numbers, affecting approximately 570,000 individuals. Individuals who received a breach notification face an increased risk of identity theft and fraud, and Edelson Lechtzin LLP is investigating a potential class action on behalf of those affected.

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TTPs

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Description

AssetMark, Inc. learned of a data breach on or about May 15, 2026. On that date the company discovered suspicious activity associated with login information. An unauthorized user subsequently accessed and obtained certain files containing customer information. The breach was identified through internal monitoring of login activity. The company confirmed that the unauthorized access resulted in the exfiltration of data from its systems.

The exposed data included names, Social Security numbers, financial account information, and government identification numbers. Approximately 570,000 individuals may have been affected by the breach. AssetMark, Inc. notified those individuals whose information was believed to be compromised. The notification informed recipients of the potential risk of identity theft and fraud. The scope of the breach was described as affecting a substantial portion of the company's customer base.

In response to the incident, Edelson Lechtzin LLP announced that it is investigating potential data privacy claims arising from the breach. The law firm stated that it is evaluating whether to pursue a class action on behalf of affected individuals. Edelson Lechtzin LLP is a national class action firm with offices in Pennsylvania and California. The firm's practice areas include data breach litigation, securities and investment fraud, federal antitrust violations, ERISA employee benefit plans, wage theft, and consumer fraud. AssetMark, Inc. provides technology, investment solutions, and professional support services to independent financial advisors.

Sources

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