A chief security officer (CSO) is a corporation's top executive who is responsible for security.
The CSO generally serves as the business leader responsible for the development, implementation and management of the organization’s corporate security vision, strategy and programs. They direct staff in identifying, developing, implementing and maintaining security processes across the organization to reduce risks, respond to incidents, and limit exposure to liability in all areas of financial, physical, and personal risk; establish appropriate standards and risk controls associated with intellectual property; and direct the establishment and implementation of policies and procedures related to data security.
Some enterprises treat the roles of CSO and Chief Information Security Officer (CISO) as separate and parallel. Where so, the CSO might be focused largely if not exclusively on physical security.
by WIKIPEDIA