Explore the complexities of open source software supply chain security in this 40-minute conference talk by Michael Lieberman from Kusari and Melissa McKay from JFrog. Delve into the challenges of managing and securing the vast ecosystem of open source repositories and packages. Learn to assess the safety of packages and their dependencies, and understand the risks associated with increasing transitive dependency complexity. Discover how to leverage open source tools, services, specifications, and best practices such as GUAC, SLSA, OSV, SBOMs, S2C2F, deps.dev, and scorecard to track, understand, and make informed decisions about the software you use and depend on. Gain insights into de-risking your use of open source packages and improving transparency in your software supply chain.