WATERLOO, ONT. — BlackBerry Ltd. has appointed David Kleidermacher as its new chief security officer, responsible for the company’s global Product Security organization.In his new role, Kleidermacher will oversee BlackBerry’s security-specific research and product development, as well as its product certification and approval program.Kleidermacher brings more than 20 years of strategy and product engineering experience to the role, including expertise in operating systems, high assurance software development techniques, mobile device security and the Internet of Things (IoT).Kleidermacher most recently served as chief technology officer at Green Hills Software. He holds patents and patents pending in the areas of software development...