The Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company Data Breach: Incident Facts and Free Case Review

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.

Received a Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company notification letter? Find out in minutes if you qualify for compensation.

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State: Montana
Breach date: April 7, 2025
Reported: December 30, 2025

Received the Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company notification letter? The Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company case file tracks this filing.

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

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.

Were you affected by the Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company breach?

If you received a notification letter, send it to us for a free, no-obligation review. We'll explain your options in plain English. Class actions are first-to-file — reaching out early matters.

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