Explore the complexities of secure data storage on mobile devices in this 44-minute Black Hat conference talk. Delve into the challenges faced by mobile app developers in securing locally cached data, debunk common misconceptions about full-disk encryption, and examine sophisticated secure storage techniques for iOS and Android. Learn about the technical operations of various security mechanisms, their practical implications, and potential vulnerabilities even when following best practices. Gain insights into reconciling security needs with mobility, accessibility, and usability requirements, and discover how to uncover secure storage flaws in real-world applications. Understand the significance of mobile device security in an era where mobile users outnumber desktop users, and explore solutions to address current shortcomings in secure storage on portable devices.