Frost Bank Notifies California Regulators of Data Security Incident

Frost Bank has filed an official data breach notification with regulators in California. This filing pertains to a security incident that was identified on December 6, 2025. The notification to state authorities, making this event public, was submitted on May 20, 2026.

The specific type of breach that occurred at Frost Bank has not been detailed in the public filing. Furthermore, the official records do not specify the categories of personal information that may have been involved. Consequently, the affected data is currently referred to in general terms, such as 'personal information' or 'your data'.

According to the information available, the investigation into this incident is still actively underway. This means that Frost Bank is continuing to assess the full scope and impact of the security event. As more details become available through official channels, they will be part of future updates.

For individuals who may be impacted by this event, it is prudent to take general protective measures. These include carefully reviewing account statements for any unfamiliar transactions and being cautious of unsolicited communications, such as emails or calls, that request personal details. Maintaining strong, unique passwords for online accounts is also a universally recommended step.

This information is compiled directly from public data breach filings made with state regulatory bodies. Such records provide factual details for individuals seeking to verify notifications they may have received. Our role is to present these facts without speculation or legal advice, serving as a reference for official breach events.