Security industry veteran Bradley J. Stephenson, Diebold’s vice president of security solutions since 2009, will retire in December after nearly 40 years in the security industry. Diebold is conducting a national search to identify a replacement for Stephenson. Kevin Engelhardt, vice president, security operations, was tapped by the company to serve as interim vice president, security solutions. Stephenson joined Diebold in 1973 served in a variety of senior management and technical positions, including general manager of physical security, card systems, fire services, Nexus Software and the original equipment manufacturer division.