Explore a novel approach to securing sensitive data in Android applications through this AppSecUSA 2017 conference talk. Learn about Androsia, a tool that uses static program analysis techniques to identify and clear security-critical objects from memory immediately after their last use. Discover how this method provides defense in depth, protecting sensitive information even after a potential app compromise. Delve into the intricacies of data flow analysis, bytecode transformation, and the implementation of flow functions to detect Last Usage Points (LUP) of objects. Gain insights into leveraging the Soot framework for Java bytecode analysis and understand the inter-procedural summary-based analysis approach. Follow along as the speaker demonstrates the practical application of Androsia on Android apps, showcasing its potential to enhance mobile application security.