Security Industry Specialists (SIS), a privately held security services provider, experienced a data breach that was disclosed to the Massachusetts Attorney General on September 26, 2026. The incident potentially compromised the personal information of individuals connected to the company. The company engaged Kroll to provide identity monitoring services to affected individuals.
The confirmed data types exposed include names, Social Security numbers, medical records, financial account information, driver’s licenses, dates of birth, addresses, and government identification information. The exact elements varied by individual. A total of 40 Massachusetts residents were reported as affected by this incident. A reliable nationwide total remains unknown, as does the date the breach occurred or was discovered by the company. It is unclear if every listed government record pertains to the same incident.
Additional details about the breach, such as a definitive company statement or a nationwide affected count, have not been publicly confirmed. Notifications may be ongoing or further information may emerge.