Data Flow Diagrams: Mapping the Flow of Sensitive Information is a video lesson that provides an overview of how to create data flow diagrams to track the movement of sensitive information within a system.

The lesson covers the basics of data flow diagrams, including their symbols and how to read them, and provides guidance on how to use them to identify and mitigate potential security risks.

The video also discusses the importance of maintaining data flow diagrams over time as systems and data flows change, to ensure that sensitive information remains protected.