Unlimited Technology Systems Data Breach Exposes Data of 3.8 Million Healthcare Patients
Brief
Hackers stole personal, medical, and insurance data of 3.8 million people from Unlimited Technology Systems’ data center.
Unlimited Technology Systems disclosed a data breach affecting more than 3.8 million people after hackers accessed one of its commercial data centers between October 5 and 10, 2025.
Unlimited Technology Systems is a U. S. -based healthcare technology company headquartered in Montgomery, Ohio. It provides financial, billing, and revenue cycle management solutions to healthcare organizations, supporting more than 4,500 oncology practices and over 6,500 specialty providers. Its platforms help providers manage payments, claims, and administrative operations.
The company discovered the incident later that month.
“On October 19, 2025, we discovered unauthorized activity within our commercial datacenter.