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Rainier Clinical Research Center data breach

Incident readout

Company
Rainier Clinical Research Center
Reported to
Washington Attorney General
Filed
April 3, 2026
People affected
Not stated in the filing
Incident type in filing
Not stated
Our review
Monitoring
Read the official filing

Was this a ransomware attack?

The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.

Information listed in the filing

  • Full Name
  • Date of Birth
  • Social Security Number
  • Medical Record Number
  • Clinical Trial Participation History
  • Health Insurance ID Number
  • Diagnosis and Treatment Information
  • Contact Information

What we know

Rainier Clinical Research Center operates as a specialized medical research organization based in Washington state, conducting clinical trials and medical studies across various therapeutic areas. Because of the nature of its operations, Rainier Clinical Research Center collects, processes, and maintains vast repositories of deeply sensitive information. This includes detailed participant enrollment records, comprehensive medical histories, highly specific clinical trial data, and personal identifiers necessary for recruiting, vetting, and monitoring patients who volunteer for experimental medical treatments and pharmaceutical studies.

In 2026, Rainier Clinical Research Center reported a significant data security incident to the Washington Attorney General, indicating that unauthorized actors may have infiltrated its digital environment or third-party vendor systems. For clinical research organizations, breaches of this magnitude frequently involve sophisticated cyberattacks such as ransomware deployments, unauthorized database intrusions, or vulnerabilities within cloud-based trial management portals. These incidents exploit gaps in network defenses, allowing malicious actors to compromise the centralized repositories where massive volumes of participant and operational health data are stored.

Based on the types of records maintained by clinical trial facilities, the exposed information likely encompasses a dangerous convergence of personal identifiers, Protected Health Information (PHI), and potentially sensitive financial or demographic details. The exposure of names, dates of birth, Social Security numbers, and detailed medical records creates severe, long-term risks for victims. Unlike a compromised credit card, clinical trial data and medical histories cannot be easily reset. This information can be exploited by bad actors to facilitate targeted medical identity theft, fraudulent insurance claims, unauthorized prescription acquisition, and sophisticated phishing schemes that leverage a patient's specific health conditions against them.

As an entity handling sensitive medical and personal data, Rainier Clinical Research Center is bound by stringent legal and regulatory standards, including the Health Insurance Portability and Accountability Act (HIPAA), the Washington Health My Data Act, and state consumer protection laws. These legal frameworks mandate rigorous administrative, physical, and technical safeguards to secure electronic PHI and personal records against unauthorized access. The occurrence of a data breach strongly suggests potential failures in maintaining adequate cybersecurity measures, deploying necessary encryption, or properly vetting third-party digital infrastructure, thereby breaching the duty of care owed to clinical trial participants.

Receiving an official data breach notification letter from Rainier Clinical Research Center serves as an explicit acknowledgment that your private information was compromised due to inadequate security protocols. Legally, this notice establishes standing to participate in a class action lawsuit aimed at holding the organization accountable for failing to safeguard sensitive data. Victims of this incident do not need to demonstrate actual financial loss or identity theft to pursue legal remedies; the compromise of private data itself constitutes a recognized harm. Our firm is currently investigating potential class action claims on a contingency fee basis, meaning affected individuals pay nothing out of pocket unless a financial recovery is successfully secured on their behalf.

See every breach reported in Washington or read what to do after a ransomware attack.

After the Rainier Clinical Research Center incident: what to do and your options

What should I do after getting the Rainier Clinical Research Center 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.
How many people were affected by the Rainier Clinical Research Center data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Date of Birth, Social Security Number, Medical Record Number, Clinical Trial Participation History, Health Insurance ID Number, Diagnosis and Treatment Information, Contact Information. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Did Rainier Clinical Research Center offer free credit monitoring?
Any free monitoring Rainier Clinical Research Center is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Signing up doesn't waive any legal rights you may have.
Where can I see the official Rainier Clinical Research Center breach notice?
Rainier Clinical Research Center's report is published by the Washington Attorney General: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA37589.pdf Compare it with the letter you received to confirm the dates and details match.
Can I sue Rainier Clinical Research Center over the data breach?
It depends on what was exposed, the law in Washington 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.
Do I need a Rainier Clinical Research Center data breach lawyer or attorney?
Whether the company's systems were encrypted by ransomware or data was simply taken, the legal question is the same: did it protect your information the way the law requires? An attorney can review your notice for free, and these cases are usually handled on contingency.
Is there a Rainier Clinical Research Center 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 Rainier Clinical Research Center. 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.
Is the Rainier Clinical Research Center data breach letter legit or a scam?
A notice from Rainier Clinical Research Center in the mail matches the breach Rainier Clinical Research Center reported to the Washington Attorney General on April 3, 2026. 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 Rainier Clinical Research Center through a phone number or website you find yourself.
How much could a Rainier Clinical Research Center data breach settlement or claim be worth?
There is no set amount, and no Rainier Clinical Research Center 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. The filing lists Full Name, Date of Birth, Social Security Number as involved. Keep receipts and records; they're what damages claims are built on.

Other breaches reported in Washington

Attorney advertising. This page reflects a public regulator filing; 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.