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Investigation OpenMT AG filing · December 17, 2025

Parexel International Files Notice of 2025 Data Breach

Parexel International, LLC has reported a data breach impacting personal information, with notification filed on December 17, 2025. The breach, discovered October 4, 2025, is currently under investigation, prompting affected individuals to remain alert.

State
MT
Breach date
October 4, 2025
Reported
December 17, 2025

Parexel International, LLC has officially filed a data breach notification with regulators, reporting an incident involving personal information. This filing was submitted on December 17, 2025, documenting a security event at the company.

The public record indicates that the specific nature of the breach type is currently unspecified. Additionally, the exact categories of personal information involved in this incident have not been detailed. Parexel International, LLC has stated that an investigation into the matter is ongoing.

The breach itself was identified on October 4, 2025. As of the filing date, the total number of individuals whose data may have been affected has not been disclosed, and therefore remains unknown from the public record.

Individuals who believe they may be impacted by this incident should carefully review any direct communications from Parexel International, LLC. While specific data types are not confirmed, general protective steps include monitoring financial statements for unusual activity, changing passwords for relevant online accounts, and staying vigilant against unsolicited emails or calls that could be phishing attempts.

This information serves as a public record of the reported breach. Affected parties should consult official notifications from Parexel International, LLC for personalized advice and more detailed information as it becomes available.

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Source: MT Attorney General filing

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