Rainier Clinical Research Center Data Breach Lawsuit Investigation

Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the Rainier Clinical Research Center data breach.

If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.

About Rainier Clinical Research Center

Rainier Clinical Research Center Inc. is a privately owned clinical research clinic based in Renton, Washington.

Founded in 1991, the center has conducted more than 600 Phase I-IV clinical trials, primarily focused on metabolic disorders such as diabetes, obesity, hypertension and lipid conditions. The facility also supports research in additional areas like cardiology, neurology, pain management and gastroenterology.

What Happened?

Rainier Clinical Research Center experienced a data breach after its IT managed service provider suffered a security incident.

On Jan. 18, 2026, Rainier discovered unauthorized activity in its systems. An investigation revealed that an unauthorized actor accessed Rainier’s systems between Jan. 15 and Jan. 18, 2026.

A ransomware group known as INC RANSOM claimed responsibility for the attack and posted about it on the dark web on Feb. 23, 2026, stating they had obtained 187 GB of the organization’s data.

Information Exposed:

• Names
• Social Security numbers
• Driver’s license or Washington ID card numbers

So far, the breach has affected at least 650 residents in Washington. Rainier notified affected individuals by mail on April 6, 2026,

You May Be Entitled to Compensation

If your information was exposed in the Rainier Clinical Research Center data breach, you may be eligible for compensation. Lawyers are ready to help affected individuals understand their rights and pursue possible claims for damages resulting from this incident.

To see if you qualify to join a lawsuit and to take the next step in protecting your rights, complete the below form.

Sources

• Washington Attorney General
• Dark web