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Learn to build truly secure applications through proper encryption implementation in this comprehensive conference talk from NDC Melbourne 2025. Explore advanced security concepts including end-to-end encryption, perfect forward secrecy, and secure device migration through live demonstrations and real-world examples. Discover how to protect both data and metadata at rest and in transit while avoiding common security pitfalls that can compromise seemingly secure systems. Follow the evolution of a chat application from basic encryption to a robust security system, examining real-world approaches to key management, traffic analysis protection, and secure device enrollment. Master architectural patterns that enable secure applications at scale and gain practical knowledge for implementing encryption correctly in messengers, document stores, and any application requiring user data protection.
