The document summarizes information from a presentation on the transport security of radioactive sources. It discusses the importance of security during transport given vulnerabilities, provides an update on training workshops being conducted by ARPANSA, and outlines requirements for developing transport security plans depending on the source category. Specific or generic security plans must be prepared, endorsed, and provided to regulators in advance of shipments of Category 1-3 radioactive sources according to regulations. The design and evaluation process for security plans is also summarized.