Which authority requires initial written approval prior to processing classified information in an ADP system?

The Cognizant Security Office (CSO) is responsible for ensuring the security of classified information within an organization, which includes granting permission for its processing in Automated Data Processing (ADP) systems. The CSO must provide initial written approval prior to any processing of classified information to ensure that all necessary security measures and protocols are in place. This oversight is essential to protect sensitive information from unauthorized access and breaches.

In this context, the role of the CSO is critical, as they are generally tasked with the oversight of security programs and ensuring compliance with classified information handling. They evaluate the security environment and the specific systems proposed for handling classified data, ensuring that they meet government and organizational security standards.

The other authorities listed, such as the head of the Industrial Security Clearance Office, the National Security Agency, and the contracting officer, may have roles in security and classification but do not specifically hold the responsibility for the approval of processing classified information in ADP systems. This delineation makes the Cognizant Security Office the correct answer regarding initial written authority.