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Sermo Data Breach

The Sermo data breach may have compromised sensitive personal information, including Social Security numbers. Affected individuals should take immediate action by enrolling in credit monitoring services and monitoring their accounts. Consider exploring your legal options for compensation through a class action lawsuit.

Sermo
Date of Breach: March 19, 2024, to April 10, 2024
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Who was affected:

Clients of Sermo

Impacted Data:

Full names

Social Security numbers

Address information (potentially)

Sermo, a healthcare knowledge platform, recently reported a ransomware attack that compromised personal information, including Social Security numbers, of affected individuals. If you were impacted, you may be entitled to compensation. Learn more about what happened and how to protect your information.

Sermo’s Data Breach Investigation

Sermo, a knowledge platform connecting healthcare professionals globally, recently disclosed a data breach after an unauthorized actor, identified as the Black Basta ransomware group, gained access to its network. The breach occurred between March 19, 2024, and April 10, 2024, following a power outage at Sermo’s data center in Denmark, which led to the discovery of the incident.

Upon learning of the suspicious activity on April 10, 2024, Sermo immediately took action to secure its network and retained cybersecurity professionals to investigate the breach. The investigation revealed that the ransomware attack involved the unauthorized access and acquisition of files from Sermo’s systems.

Black Basta took responsibility for the attack and later posted the stolen data on its dark web leak site. Sermo made multiple attempts to download the data, but due to the slow nature of the leak site, it wasn’t until September 20, 2024, that the full dataset was downloaded. The data was eventually removed from the site on January 27, 2025.

Sermo’s investigation into the leaked data confirmed that the personal information of several individuals was impacted, including the Social Security numbers of five Maine residents. Although Sermo has stated that there is no evidence of identity theft or fraud as a result of the breach, they are offering identity monitoring services to affected individuals as a precautionary measure.

When Did This Breach Occur?

The breach occurred between March 19, 2024, and April 10, 2024. The suspicious activity was detected on April 10, 2024, with the full data being downloaded by September 20, 2024. The data was no longer accessible after January 27, 2025, when Black Basta’s leak site was taken down.

What Information Was Breached?

The information that may have been compromised includes:

  • Full names

  • Social Security numbers

  • Address information (potentially)

Sermo has emphasized that while medical records or detailed health information were not specifically mentioned, there may have been health-related data accessed as part of the breach. However, Sermo believes that identity theft or fraud has not occurred from this data breach as of now.

What You Can Do

If you were affected by the Sermo data breach, it is crucial to take immediate steps to protect your personal information:

  1. Enroll in identity monitoring services: Sermo is offering complimentary credit monitoring and identity theft protection services through Kroll for 12 months. This service includes:

    • Credit Monitoring

    • Fraud Consultation

    • Identity Theft Restoration
      Follow the instructions provided in the notification to enroll.

  2. Monitor your credit and bank accounts: Regularly review your bank statements, credit card accounts, and credit reports for any suspicious activity.

  3. Obtain your free credit report: You are entitled to one free credit report annually from each of the three major credit bureaus: Equifax, Experian, and TransUnion. Visit AnnualCreditReport.com to access your reports and check for any unauthorized activity.

  4. Place a fraud alert or credit freeze: Consider placing a fraud alert or credit freeze on your credit file to prevent unauthorized access and new credit from being issued in your name.

  5. Stay vigilant for identity theft: If you notice anything suspicious, contact your financial institution or service provider immediately.

While no immediate action is required, these steps will help safeguard your information against any potential misuse.

File a Data Breach Lawsuit Against Sermo

If you received a data breach notification from Sermo or believe your personal information was exposed, you may be eligible to file or join a class action lawsuit. Compensation may be available for the time spent addressing the breach, any out-of-pocket expenses, and potential damages for identity theft or fraud.

Class action lawsuits serve as a way for individuals affected by breaches to hold companies accountable for not adequately protecting their data. If you’ve been impacted, it’s important to act now.

Contact us at Class Action U, where we’ll connect you with a lawyer skilled in data breach lawsuits. Fill out our quick, easy, and secure form to sign up for a free consultation to see if you have a case. There is no cost to reach out to our legal partner, and you are under no obligation after speaking with someone from our team.

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Other Data Breaches
Date of Breach: Not Specified
Date of Breach: January 29, 2026
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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.