SDS VitalSigns for Secure Transfer (VST) is a monitoring and auditing solution designed for IBM z/OS mainframe environments, specifically targeting secure file transfer activities. It provides real-time visibility into file transfer operations conducted over protocols such as FTP, SFTP, and FTPS on mainframe systems. VST captures and logs transfer events, enabling security and operations teams to monitor who is transferring files, what data is being moved, when transfers occur, and whether transfers succeed or fail. This audit trail supports compliance requirements by providing detailed records of secure transfer activity on z/OS systems. The product offers alerting capabilities that notify administrators of suspicious or policy-violating transfer behavior, allowing for timely response to potential data movement concerns. It integrates with existing mainframe security frameworks and provides reporting features that help organizations demonstrate compliance with internal policies and external regulations. VitalSigns for Secure Transfer is part of the broader SDS VitalSigns product family, which focuses on mainframe security monitoring across various subsystems. It is positioned for organizations running IBM z/OS infrastructure that require oversight of file transfer activity for security and compliance purposes.