A new study, commissioned by Compuware Corporation and conducted by the Ponemon Institute, on the Uncertainty of Data Breach Protection, was released earlier this week. The study reveals that insiders caused 75 percent of all data breaches in the United States and outsiders (external hackers) caused 1 percent of all of the data breaches in the U.S. In addition, the study shows that over 40 percent of all data breaches occurred in a mainframe environment. How did the insiders cause the breach? The study suggests negligence as the primary reason but also reveals outsourcing and malicious employees as problematic.