Data Breach Law Group Investigates the Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company Data Breach
By Data Breach Law Group | Posted on December 30, 2025 · Montana
Miami, FL — Data Breach Law Group is investigating a data breach involving Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company, reported to the Montana Attorney General on December 30, 2025. The firm is reviewing whether affected individuals have legal claims arising from the incident.
Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company are insurance providers that manage sensitive policyholder information. These companies typically collect and store extensive personal and financial data, including Social Security numbers, policy details, and banking information necessary for premium payments and claims processing. In 2025, these entities officially reported a data breach to the Montana Attorney General, confirming that unauthorized access to their systems occurred. If you received a data breach notification letter, it indicates that your personal information may have been compromised during this incident. This notice is intended to inform you of the situation, the types of data involved, and the steps the companies are taking to address the security event and support affected individuals.
If you were affected
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.
Did you receive a letter from Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company?
A case review is free and confidential. Tell us about your letter and we will explain your options.