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PAREXEL INTERNATIONAL, LLC Data Breach — Case File

IL · AG Filing: Nov 20, 2025

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Exposed Data — What's at Risk

Based on the data types reported in this filing:

Identity Theftcritical risk

Your SSN is the master key to your identity. Once exposed, criminals can open new lines of credit, take out loans, or file taxes in your name.

Identity Verification Bypassmedium risk

Combined with a name and other leaked data, date of birth helps criminals pass identity verification questions at banks and government agencies.

What Happened

PAREXEL INTERNATIONAL, LLC was the subject of a data breach notification filed with the IL Attorney General. The AG filing was recorded on November 20, 2025.

From the AG filing description

Parexel International, LLC operates as a leading global clinical research organization (CRO) providing biopharmaceutical outsourcing services, clinical trial management, and regulatory consulting to the life sciences and healthcare industries. Because of its core operations, Parexel sits at the critical intersection of pharmaceutical development and clinical research, partnering with major drug developers to conduct global clinical trials. In this capacity, the company routinely collects, processes, and stores vast repositories of highly sensitive information, including clinical trial participant health records, proprietary research data, employee personnel files, and detailed personal identifiers required for medical research oversight, regulatory compliance, and global payroll processing. In 2025, Parexel International, LLC reported a significant data security incident to the Illinois Attorney General, triggering notification requirements for individuals whose personal and sensitive data may have been compromised. While the exact technical vectors of the breach continue to be evaluated through ongoing forensic investigations, incidents affecting organizations of this scale and industry typically involve sophisticated cyberattacks, such as unauthorized access to centralized corporate databases, enterprise server compromises, or vulnerabilities exploited within third-party software vendors. In the context of a global clinical research and healthcare-adjacent organization, threat actors are heavily incentivized to target proprietary systems to harvest valuable personally identifiable information and confidential research assets. The exposure of data in a breach involving Parexel International, LLC poses severe, long-term risks to affected individuals whose personal, professional, or medical records were stored within the company's network. Depending on the scope of the incident, compromised data categories frequently include full names, dates of birth, Social Security numbers, banking and payroll details for employees, and potentially clinical trial participant identifiers or medical history details. The unauthorized disclosure of Social Security numbers and banking details creates an immediate and severe danger of identity theft, tax fraud, and financial account takeover. Meanwhile, any exposure of clinical research data or employee health-related information threatens fundamental privacy rights, leaving victims vulnerable to targeted phishing scams, medical fraud, and unauthorized profiling. As an entity handling sensitive personal and professional data, Parexel International, LLC was bound by rigorous legal and regulatory obligations to secure its network infrastructure and safeguard the information entrusted to its care. These duties stem from state consumer protection statutes, the Illinois Personal Information Protection Act, common law negligence principles, and general industry standards regarding data security. Under these legal frameworks, companies holding sensitive data are required to implement robust administrative, technical, and physical safeguards—such as multi-factor authentication, regular vulnerability assessments, and robust encryption. The occurrence of a data breach of this magnitude strongly suggests a failure in these mandatory security protocols, raising serious questions about whether the company fulfilled its legal duty to protect private information. Receiving a data breach notification letter from Parexel International, LLC is a formal acknowledgment by the company that your confidential information was exposed as a result of their inadequate security measures. Legally, this notification provides affected individuals with the standing necessary to participate in a class action lawsuit aimed at holding the company accountable for its security failures. Under established legal precedents, victims do not need to prove that they have already suffered actual financial loss to seek legal remedies; the increased, imminent risk of future identity theft is sufficient. Our law firm is actively investigating potential class action claims on behalf of individuals impacted by the Parexel data breach, and we handle all such cases on a strict contingency fee basis—meaning you pay nothing out of pocket unless we successfully recover compensation on your behalf.

Quick Facts

State Filed
IL
Date Reported to AG
Nov 20, 2025
Date of Breach
Not disclosed
Records Affected
Not disclosed
Status
Investigation Open
Last Updated
Oct 5, 2026
Data Types Exposed
Full NameSocial Security NumberDate of BirthWage and Compensation InformationTax Return InformationDirect Deposit Account DetailsHome AddressTelephone Number

Were You Affected?

You may have been affected by the PAREXEL INTERNATIONAL, LLC data breach if:

  • You received a written data breach notification letter from PAREXEL INTERNATIONAL, LLC
  • You are or were a customer, patient, or employee of PAREXEL INTERNATIONAL, LLC
  • Your information was held by PAREXEL INTERNATIONAL, LLC in IL
  • Your bank or payment card data was potentially exposed

Your Legal Rights

Common categories of compensation in data breach class actions

Lost Time & Remediation Costs

The hours spent responding to a data breach — canceling accounts, contacting credit bureaus, updating passwords, and investigating fraud — represent compensable economic harm in data breach litigation.

Identity Theft Protection Costs

Once your SSN is exposed, protection becomes an ongoing expense. Plaintiffs in data breach settlements have recovered costs for credit freezes, identity protection subscriptions, and time spent dealing with fraudulent accounts — sometimes covering multiple years of exposure.

Banking & Account Fees

Fees charged to close and reopen accounts, issue replacement cards, or dispute fraudulent transactions are recoverable in data breach litigation. So are the costs of overdrafts, late payments, and credit damage caused by unauthorized activity.

Emotional Distress

Data breach victims regularly report anxiety, loss of sleep, and ongoing fear of identity theft. These non-economic harms are cognizable injuries in data breach litigation, particularly in cases involving SSN or medical record exposure.

Note: an attorney general breach filing does not by itself establish a settlement fund, a payment amount, or a claim deadline. If an official settlement notice is later issued, rely on that notice for payment details and deadlines.

Applicable State Law

This breach was reported under the Illinois Personal Information Protection Act (PIPA), which mandates notification and establishes your right to seek damages.

Frequently Asked Questions

Do I need proof that my data was misused to file a claim against PAREXEL INTERNATIONAL, LLC?

No. Under Illinois Personal Information Protection Act (PIPA) and federal law, the unauthorized exposure of your personal data — regardless of whether it has been actively misused — can be sufficient grounds for a claim. The breach itself is the injury.

How much does filing a claim cost?

Nothing. The Law Office of David S. Harris handles data breach cases on contingency — you pay zero upfront and owe nothing unless compensation is recovered.

My Social Security Number was exposed. What should I do right now?

Immediately place a free credit freeze at all three bureaus (Equifax, Experian, TransUnion). A freeze blocks new accounts from being opened in your name. Then file a complaint with the FTC at IdentityTheft.gov and contact our office — SSN exposure is one of the most serious breach types.

My financial account data was exposed. Can the bank recover my losses?

Banks may reverse fraudulent charges, but they are not obligated to compensate you for time lost, stress, or indirect damages. A class action claim against the breached company can recover those additional categories of harm.

Is it too late to file a claim?

Statutes of limitations for data breach claims vary by state but typically run 2–4 years. Depending on when you learned of the breach, you may still have time. Contact our office for a free eligibility review — there is no cost to find out.

What if PAREXEL INTERNATIONAL, LLC offered me free credit monitoring after the breach?

Accepting free credit monitoring from PAREXEL INTERNATIONAL, LLC does not waive your right to pursue legal action unless you signed a specific release waiving claims. In most cases, victims who accepted monitoring can still file.

Do I need to have received a notice letter to be eligible?

Not necessarily. Many data breach victims are never notified directly. If your personal information was held by PAREXEL INTERNATIONAL, LLC during the relevant period, you may still qualify even without receiving a letter. A free eligibility review can confirm your status.

Filing Window Open

Received a Notice Letter?

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Seek Compensation

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This case file references a public filing made with the state filing in IL. This website is not affiliated with, endorsed by, or operated by any state government agency.

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