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Investigation OpenCalifornia AG filing · March 31, 2026

Advantage Media Services Reports Data Breach from September 2025

Advantage Media Services LLC experienced a data breach on September 8, 2025, which involved unauthorized access to systems containing personal information. The incident was officially reported to the California Attorney General on March 31, 2026, and is currently under investigation. Individuals who received a notification letter should review it for details on how to protect their information.

State
California
Breach date
September 8, 2025
Reported
March 31, 2026

Advantage Media Services LLC, a California-based company, reported a data breach that occurred on September 8, 2025. The company filed notice of the incident with the California Attorney General on March 31, 2026, confirming that personal information was compromised due to unauthorized access to their systems.

Advantage Media Services LLC operates as a marketing, advertising, and media technology firm. In this capacity, the company typically manages extensive consumer databases for targeted campaigns and digital outreach, which often include various forms of personal information. The breach means that this information, collected and stored in their systems, was accessed without authorization.

Following the detection of the security incident, Advantage Media Services LLC initiated an investigation, which is currently ongoing, to understand the full scope and impact of the unauthorized access. The official report to state regulators indicates a commitment to transparency regarding the event.

If you have received a data breach notification letter from Advantage Media Services LLC, it indicates that your personal information was likely stored within the affected systems at the time of the incident. This notice is intended to inform you of the event and provide guidance.

It is advisable to remain vigilant for any unusual activity across your accounts. Consider monitoring your financial statements and credit reports for any signs of misuse. You can place a fraud alert or security freeze on your credit files as a precautionary measure to help protect your data from potential misuse.

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