Marquis Software Solutions (on behalf of business customer data owners) data breach

Clerk's notes

Marquis Software Solutions, a technology company specializing in enterprise software and data management, recently filed a report with the California Attorney General regarding a data security incident. This report confirms unauthorized access occurred within their hosted environments, potentially exposing personal information.

The breach took place on August 14, 2025, and was formally reported on February 11, 2026. The information involved in this incident was held by Marquis Software Solutions on behalf of its business clients, meaning affected individuals are likely customers or employees of those client companies.

At present, the incident remains under investigation. If you have received a formal data breach notification letter from Marquis Software Solutions, or from one of their business customers, it is important to review this document carefully. It should provide specific details about the exposure and any identity protection services being offered.

While the specific categories of exposed data are not detailed, individuals who have received a notification should remain vigilant. Consider monitoring any relevant accounts for unusual activity and being cautious of unsolicited communications, as this may indicate attempts to misuse your data. It is always a good practice to be proactive when personal information may have been compromised.

Understanding the potential impact of this data event can be complex. If you believe your personal information was involved in the Marquis Software Solutions breach, you may wish to seek a free case review to discuss your situation and potential next steps.

If a notification letter about this breach reached you, see every California data breach on file or browse all cases.