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Check Your Eligibility

Sentinel Security Life and Atlantic Coast Life Insurance Data Breach

A cyberattack between April 7–15, 2025, compromised personal and medical data of over 57,000 individuals across Sentinel Security Life and Atlantic Coast Life Insurance Companies. The breach included Social Security numbers, birthdates, and policy details. Legal options are available for those affected.

Sentinel Security Life and Atlantic Coast Life Insurance
Date of Breach: April 7–15, 2025
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Who was affected:

Clients of Sentinel Security Life and Atlantic Coast Life Insurance

Impacted Data:

Full names

Social Security numbers

Dates of birth

Medical treatment information

Health insurance policy numbers

Check Your Eligibility

Sentinel Security Life and Atlantic Coast Life Insurance Companies disclosed a data breach affecting over 57,000 individuals after a cyberattack accessed sensitive customer and policyholder data.

Sentinel Security Life and Atlantic Coast Life Insurance’s Data Breach Investigation

In December 2025, Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company—along with their affiliates—confirmed a significant data breach. The companies reported that between April 7 and April 15, 2025, unauthorized actors accessed their computer systems, potentially acquiring files containing sensitive customer information.

The suspicious activity was first detected on April 15, 2025, prompting immediate security measures, including isolating affected systems and launching a forensic investigation. Over the following months, the companies reviewed the impacted data to identify the individuals affected. On December 17, 2025, the companies concluded their review and began notifying impacted individuals.

The breach affected a total of 57,253 individuals, including 24 residents of Maine. The exposed data included names, Social Security numbers, dates of birth, treatment information, and health insurance policy numbers—data that is highly valuable on the black market and can be used in identity theft, insurance fraud, and other malicious activities.

Although the companies report no evidence of misuse, they acknowledged the risk and issued notifications “out of an abundance of caution.” Affected individuals are being offered one year of free credit monitoring and identity restoration services through IDX. Notifications were sent by mail, and public notices were posted on company websites and shared with media outlets.

The companies also reported the breach to federal law enforcement and relevant regulatory bodies. Internal reviews of data handling policies and employee training are underway to prevent future incidents. Still, those affected should remain on high alert and consider legal options to recover damages and ensure accountability.

When Did This Breach Occur?

  • Date of Breach: April 7–15, 2025

  • Date Discovered: April 15, 2025

  • Review Completed: December 17, 2025

  • Notification Sent: December 30, 2025

What Information Was Breached?

  • Full names

  • Social Security numbers

  • Dates of birth

  • Medical treatment information

  • Health insurance policy numbers

This sensitive information may have been accessed and exfiltrated by unauthorized individuals during the breach.

What You Can Do

If you were notified by Sentinel Security Life or Atlantic Coast Life Insurance, take these steps to protect yourself:

  • Enroll in Identity Protection: Use the free 12-month IDX identity monitoring and restoration services offered by the companies.

  • Place a Credit Freeze or Fraud Alert: Prevent new credit accounts from being opened in your name by contacting Equifax, Experian, or TransUnion.

  • Monitor Credit Reports: Check your credit reports regularly for suspicious accounts or inquiries.

  • Stay Vigilant: Watch for unusual activity in medical insurance claims, billing statements, or government benefits.

  • Report Identity Theft: If you suspect fraud, report it immediately to the FTC at IdentityTheft.gov and contact local law enforcement.

At Class Action U, we believe knowledge is power—and we’re here to help you turn a breach into a chance to act. You don’t have to go it alone.

File a Data Breach Lawsuit Against Sentinel and Atlantic Coast Life Insurance

If your personal or medical information was exposed in this breach, you may be eligible to join a class action lawsuit against Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company. Companies that store and manage sensitive personal data have a duty to keep it secure—and when they fail, you have a right to pursue justice.

By joining a class action, you may be able to recover damages for the exposure of your data, the time and stress involved in protecting your identity, and any actual losses you’ve experienced.

Contact us at Class Action U, where we’ll connect you with a lawyer skilled in class action lawsuits. If you’ve been contacted about this breach, received notice, or discovered you were impacted, fill out our quick, easy, and secure form to sign up. There is no cost to reach out to our legal partner and no obligation after speaking with someone from our team.

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Frequently Asked Questions

A data breach occurs when sensitive, confidential, or protected information is accessed, stolen, or disclosed without authorization. Data breaches often occur through phishing emails, malware, weak passwords, insider threats, or unsecured databases. Indicators of a data breach can include unexpected password resets, suspicious account activity, unauthorized transactions, or notifications from companies about compromised information.If you suspect your data has been compromised, you must take measures and act quickly. Change passwords, enable two-factor authentication, review your financial accounts for unusual activity and consider freezing your credit.

Once stolen, your personal information may be sold on the dark web or used for identity theft and financial fraud. In some cases, hackers use the data to extort companies or launch further attacks. Victims often face long-term risks, including damage to credit and privacy.

If you receive a data breach notification, don’t ignore it. Immediately change passwords for the affected account and any others that share credentials. Enroll in any free credit monitoring services offered and monitor financial statements closely.

To pursue a data breach claim, you’ll need documentation showing your information was compromised and proof of resulting harm, such as fraudulent charges, credit score damage, or identity theft reports. Notification letters, financial records, and communication with the breached company can help support your claim.

Yes. If a company fails to protect consumer data or delays notifying victims, it may be held liable under state and federal privacy laws. Many victims join class action lawsuits to recover financial losses and hold negligent organizations accountable.

Data breach settlements vary widely depending on the size of the breach, type of data compromised, and damages suffered by victims. Payouts may include cash compensation, identity theft protection, or reimbursement for losses. Many settlements range from a few hundred to several thousand dollars per person. A skilled data breach lawyer can guide victims through the complex legal process, ensuring their rights are protected. If you’ve received a data breach notification or believe your personal data was exposed, you may be eligible for compensation. Contact Class Action U to learn more about how to join a data breach lawsuit and understand the process of filing.