Third Brigade’s security software is chosen by Beth Israel Deaconess Medical Center, the latest in an impressive list of the company’s Boston-area customers. Ottawa-based Third Brigade says the hospital has deployed its Deep Security solution to safeguard patient and hospital data generated by some 750,000 patient visits a year. The medical centre is one of four Boston-area hospitals to adopt Third Brigade’s software. Other customers in the area include the Harvard Medical School and the Massachusetts Health Data Consortium.