Frost Bank Data Breach Notice (Montana Attorney General)
If you received a notice from Frost Bank, here’s what the filing says was exposed, and what to do about it.
Frost Bank notified Montana residents of a data breach in a filing reported to the Montana Department of Justice on May 19, 2026. The filing puts the incident itself on December 01, 2025.
Report details & sourcing
Severity
Low
contact details only, none of them permanent
Disclosed
May 19, 2026
Last reviewed
July 22, 2026
Affected
74
Data exposed
Personal information (per the breach notification)
Editorial & sourcing policy
GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.
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