Medical information for 957 patients at Derby, CT-based Griffin Hospital was breached by a radiologist who broke into a computer archive system over a period of several weeks after he was terminated in February. The hospital announced the security breach on its website. The doctor worked for a radiology group contracted by Griffin Hospital. In late February, some patients called Griffin Hospital to say they had been contacted by the doctor, who was offering his professional services at a different hospital in the area. The inquires prompted a hospital investigation, the Hartford Courant reports.