Explore Windows Phone app security for developers and penetration testers in this conference talk from AppSecEU 2015. Delve into encryption techniques, external services integration, secure data transfer, and protection against man-in-the-middle attacks. Learn about digital certificates, preventing internal data leakage, and implementing robust authentication and authorization mechanisms. Gain insights into secure coding practices, avoiding broken cryptography, and defending against client-side injection vulnerabilities. Examine practical examples and discover remediation strategies for common security issues in Windows Runtime applications. Enhance your understanding of mobile app security with expert guidance on language-specific considerations and effective browsing of the file system.