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Cierant Data Breach Lawsuit Investigation
Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the Cierant Corporation data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About Cierant Corporation
Cierant Corporation is a marketing software and services company based in Danbury, Connecticut. Founded in 1987, the company develops distributed marketing platforms that help businesses with localized channel marketing execution. Cierant Corp. is known for combining software development, data management, and marketing services to help clients optimize their marketing strategies.
Cierant Corporation has 28 employees and annual revenue reported at $9.4 million as of 2024, Cierant Corp. supports Blue Cross and Blue Shield of Massachusetts with high volume member mailings, by merging member data with letter files provided by Blue Cross, which are then printed and mailed to members.
What happened?
Cierant Corp. experienced a data breach due to a ransomware attack compromising Blue Cross and Blue Shield of Massachusetts patient data. The cybersecurity incident was discovered by the company on Dec. 10, 2024, with the hacking group CL0P claiming responsibility and posting about the incident on the dark web.
Exposed Information
- Name
- Address
- Date of birth
- Health plan beneficiary number
- Medical record number
- Plan member account number
- Premium information
- Provider name
- Claims number
- Treatment-related dates
- A generic description of services received
Cierant began notifying affected individuals on July 3, 2025. The data breach was disclosed to the California Attorney General's office on July 7, 2025 and Cierant published a Notice of Data on its own website.
Your Rights and Next Steps
If your information was compromised in the Cierant Corp. data breach, you have important rights under state and federal law. You may be entitled to seek compensation for any harm or inconvenience caused by this cybersecurity incident.
- Credit monitoring services: Sign up for the 12 months of free Epiq credit monitoring services offered by Cierant Corp.
- Monitor your accounts carefully: Check your financial statements regularly for suspicious activity or unauthorized transactions. If you notice anything unusual, contact your financial institution immediately.
- Fraud alert and credit reports: A fraud alert informs creditors to take extra steps to verify your identity before opening new accounts in your name. Consumers are also entitled to one free credit report annually from each credit bureau. You can request a fraud alert or a credit report by contacting any one of the three major credit bureaus.
- Seek legal help: Lawyers are ready to help you understand your rights and pursue compensation.
You May Be Entitled to Compensation
If you were affected by the Cierant Corp. and Blue Cross and Blue Shield of Massachusetts data breach, you may be eligible to join a class action lawsuit and seek compensation, which could include reimbursement for out-of-pocket expenses, time spent addressing the breach, or payment for emotional distress.
Lawyers are ready to help guide you through the process and fight for your rights. To find out if you qualify and to take the next step, complete the form below.
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