Sentinel Security Life, Atlantic Coast Life Report Data Breach

Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company officially reported a data breach to the Montana Attorney General. This disclosure confirms that both insurance providers experienced a security incident affecting personal information.

The filing indicates that unauthorized access to systems containing policyholder information occurred. While the specific categories of data involved were not detailed in the public record, individuals who received a direct notification letter from either company should refer to that correspondence for precise details about what information of theirs may have been exposed.

According to the public record, the breach itself was identified on April 7, 2025, and the official report was submitted on December 30, 2025. Both companies are currently investigating the incident to understand its full scope and impact.

If you received a notification, it is generally recommended to remain vigilant for unusual activity. This includes reviewing statements from your financial institutions and credit reports for any unfamiliar transactions or accounts. Many financial institutions offer free alerts for suspicious activity.

For further information specific to your situation or about the measures being taken by the companies, affected individuals should contact Sentinel Security Life Insurance Company or Atlantic Coast Life Insurance Company directly using the contact information provided in their official notification letter.