Parexel International Reports 2025 Data Breach in Montana

Parexel International, LLC, a global clinical research organization, formally reported a data breach to the Montana Attorney General on December 17, 2025. The company stated that this incident, which is currently under investigation, initially occurred on October 4, 2025. Public filings indicate that Parexel has issued formal notification letters to all potentially affected individuals.

While the specific categories of information involved in this event were not detailed in the public record, Parexel International, LLC typically handles sensitive personal data related to clinical research and regulatory compliance. The breach may have exposed personal information.

If you received a notification letter from Parexel International, LLC regarding this incident, it signifies that your personal information may have been compromised. The company's notice should provide further details specific to your situation and outline any protective measures being offered.

Individuals who have been notified are advised to review the information provided in their notification letter carefully. It is also recommended to monitor financial accounts and other personal statements for any suspicious activity. Remaining vigilant for unsolicited communications or unusual requests for personal details is a general precaution.

This filing with the Montana Attorney General serves as a public record of the incident. It helps ensure transparency regarding data security events affecting residents of the state.