Barnow and Associates, P.C.

Byonyks Data Breach Investigation

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We are investigating a potential breach of customer data impacting Byonyks.

Posted on July 30, 2026

Overview of the Byonyks Data Breach

Barnow and Associates, P.C. is investigating reports that the Qilin ransomware group claims to have breached Byonyks.

If you received a data breach notification from Byonyks, contact us to discuss your rights.

About Byonyks

Byonyks is a medical device company based in Itasca, Illinois.

Details of the Data Breach

The Qilin ransomware group has claimed responsibility for a cyberattack against Byonyks.

What to Do If You Received a Data Breach Notification

You may be eligible to join a class action lawsuit. Contact Barnow and Associates, P.C. today.

Steps to Protect Yourself

  1. Review any notice you received.
  2. Monitor your accounts and credit report.
  3. Consider credit monitoring and identity protection.
  4. Update passwords and enable two-factor authentication.

How Barnow and Associates, P.C. Can Help

We are actively investigating this matter and fighting for compensation for affected individuals. Call (312) 621-2000 or fill out the form below for a free consultation.

Barnow and Associates, P.C

Current Investigations

If facts are changing, law cannot be static.
~The Honorable Felix Frankfurter