A recent data breach at Unlimited Technology Systems, a US-based healthcare technology company, has exposed the personal, medical, and insurance data of 3.8 million individuals. The breach occurred between October 5 and 10, 2025, when hackers gained access to one of the company's commercial data centers. As a provider of financial, billing, and revenue cycle management solutions to healthcare organizations, Unlimited Technology Systems holds sensitive information for over 4,500 oncology practices and 6,500 specialty healthcare providers. The stolen data poses a significant risk to affected individuals, who may now be vulnerable to identity theft and other forms of cyber exploitation1. This breach highlights the need for robust security measures to protect sensitive healthcare data, and practitioners should be aware of the potential consequences of such incidents on their patients' personal and medical information.