Unlimited Technology Systems Data Breach Affects 3.8 Million Patients

Unlimited Technology Systems reported a data breach impacting over 3.8 million individuals after unauthorized access to its commercial data center occurred from October 5 to 10, 2025. The breach involved the theft of personal, medical, and insurance data. The company discovered the breach on October 19, 2025, and notified law enforcement while beginning to inform affected patients on July 1, 2026. The breach notification was submitted to the U.S. Department of Health and Human Services, revealing the scale of the impact. Unlimited Technology Systems specializes in healthcare technology, serving thousands of clinics and providers across the U.S. No ransomware or data-extortion groups have claimed responsibility for the breach, and the identity of the attackers remains unknown. To mitigate risks, affected individuals were offered identity monitoring services.

Key Points: • 3.8 million individuals affected by the Unlimited Technology Systems breach. • Unauthorized access occurred over a five-day period in October 2025. • No claims of responsibility from ransomware or data-extortion groups.