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

Clerk's notes

Marquis Software Solutions, a company specializing in enterprise software and cloud-based applications for various business customers, formally reported a data security incident to the California Attorney General on December 2, 2025. This filing confirms that unauthorized access to systems occurred, impacting the personal information managed by Marquis on behalf of its clients.

The incident, which Marquis Software Solutions stated happened on August 14, 2025, indicates that sensitive data stored within their systems may have been compromised. As a provider of services to other businesses, Marquis often handles various types of personal information belonging to the customers or employees of those businesses.

If you have received a data breach notification letter regarding the Marquis Software Solutions incident, it means your personal information may have been involved. We recommend reviewing your notification letter carefully, as it should provide more specific details about the breach, including the scope of the exposure and any identity protection services being offered.

While the specific categories of data involved have not been detailed, it is always a prudent measure to stay alert for unusual activity on your accounts. Consider monitoring financial statements and credit reports. Be wary of unsolicited emails, phone calls, or messages that ask for your personal details, as these could be phishing attempts.

Understanding your rights and options after receiving a data breach notification can be complex. If you are among those who received a letter about the Marquis Software Solutions security incident, you may be eligible for a no-cost case review.

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