Where does the Parexel International, LLC case file come from?

Every entry is taken from the breach report Parexel International, LLC lodged with the Montana Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Parexel International, LLC Data Breach

This file collects the dated facts on record for the Parexel International, LLC incident. The state report is dated December 17, 2025. The incident itself is dated October 4, 2025.

Timeline

74 days separate the incident date from the date it was reported.

October 4, 2025Incident dateWhen the filing says the breach took place.
December 17, 2025Report filed in MontanaDate the notice was lodged with the Montana Attorney General.

Case facts

Filing state: Montana
Date reported: December 17, 2025
Incident date: October 4, 2025
Receiving office: Montana Attorney General

Case notes

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.

Questions about this case file

Where does the Parexel International, LLC case file come from?: Every entry is taken from the breach report Parexel International, LLC lodged with the Montana Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Montana data breaches

Filing source: Montana Attorney General

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Timeline

Case facts

Case notes

Questions about this case file

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