> Cause not stated in filing
Parexel International, LLC data breach investigation
- Filed
- December 17, 2025
- Regulator
- Montana AG
- People affected
- Not stated
- File status
- Investigation Open
What the filing confirms
- Parexel International, LLC reported the incident to the Montana Attorney General.
Still unknown
- Which categories of personal information were taken. The filing does not list them.
- How many people were affected. The filing does not give a number.
- What caused the incident beyond the description in the filing.
- How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Investigation notes
Parexel International, LLC is a global clinical research organization that provides specialized services to the biopharmaceutical and medical device industries. Given the nature of their business, the company typically collects and maintains sensitive personal information, including detailed health records, clinical trial participation data, and government identification numbers required for regulatory compliance. This data breach was officially reported to the Montana Attorney General in 2025, and the company has since issued formal notification letters to all impacted individuals. If you received such a letter, it indicates that your personal or health-related information may have been compromised. We recommend reviewing the details provided in your notice carefully to understand the specific scope of the incident and the protective measures being offered by the company.
What our attorneys examine
A cyberattack does not excuse a company from protecting the information it holds. We look at whether Parexel International, LLC used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in Montana.
Parexel International, LLC data breach questions
- Is the Parexel International, LLC data breach letter legit or a scam?
- A notice from Parexel International, LLC in the mail matches the breach Parexel International, LLC reported to the Montana Attorney General on December 17, 2025. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Parexel International, LLC through a phone number or website you find yourself.
- Did Parexel International, LLC offer free credit monitoring?
- Check your letter from Parexel International, LLC. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Using the free service won't stop you from joining a lawsuit or settlement later.
- Is there a Parexel International, LLC data breach class action lawsuit?
- Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Parexel International, LLC. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
- What should I do after getting the Parexel International, LLC data breach notice?
- Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
- Do I need a Parexel International, LLC data breach lawyer or attorney?
- An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
- Can I sue Parexel International, LLC over the data breach?
- It depends on what was exposed, the law in Montana and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
- How much could a Parexel International, LLC data breach settlement or claim be worth?
- There is no set amount, and no Parexel International, LLC settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.
Other open files in Montana
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- MemberSource Credit UnionMT Attorney General · Filed May 5, 2026Count not stated
- GrayRobinson P.A.Montana Attorney General · Filed April 24, 2026Count not stated
- GrayRobinson P.A.Montana Attorney General · Filed April 24, 2026Count not stated
- GrayRobinson P.A.MT Attorney General · Filed April 24, 2026Count not stated
Attorney advertising. An incident file reflects a public regulator filing and our review of it; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.