ADT, Inc. disclosed a cybersecurity incident detected on April 20, 2026, involving unauthorized access to customer and prospective customer data. The breach exposed names, phone numbers, addresses, dates of birth, and the last four digits of Social Security numbers or Tax IDs. No payment or banking information was accessed, and security systems remained secure. ADT terminated the intrusion, engaged third-party forensic experts, notified law enforcement, and is offering complimentary credit monitoring and fraud assistance via Cyberscout (TransUnion). Notices were sent to Massachusetts residents on June 29, 2026.