Parexel International Data Breach Exposes Clinical Patient Data

Parexel International, LLC, a major clinical research organization specializing in biopharmaceutical services, confirmed a data breach reported to the Montana Attorney General's Office on December 17, 2025. The incident, which occurred on October 4, 2025, involved unauthorized access to systems containing sensitive information.

Investigations indicate that the exposed data included Full Name, Date of Birth, Social Security Number, Medical Record Number, Health Insurance ID Number, Clinical Trial Participation Records, Diagnosis and Treatment Information, and Contact Information. Such a comprehensive exposure creates serious long-term risks, including identity theft, medical fraud, and potential misuse of private health conditions.

As a custodian of extensive clinical and personal data, Parexel International was obligated to implement robust security measures under various laws, including HIPAA. The occurrence of this breach suggests potential failures in safeguarding confidential information and raises questions about whether the company met industry standards for data protection.

If you received a data breach notification letter from Parexel International, LLC, it serves as a formal acknowledgment that your sensitive information was compromised. This notification establishes a basis for you to explore legal claims for potential damages and to cover costs associated with mitigating risks.

Our dedicated legal team is actively investigating the Parexel International data breach on behalf of affected individuals. We aim to hold responsible parties accountable and pursue compensation for those whose privacy has been violated. We offer free case reviews and operate on a contingency fee basis, meaning you pay no upfront legal fees.