Explore the impact of modern development trends on application security in this 25-minute conference talk from AppSec EU 2017. Delve into the challenges posed by containers, microservices, and other self-contained software units that challenge traditional security approaches. Learn about the advantages and disadvantages of treating applications as black boxes, methods for gathering information across distributed systems, and examples of operational concerns shifting from infrastructure to applications. Discover the importance of integrating build-time and runtime data for a comprehensive understanding of system state. Gain insights into assuring dependencies, testing strategies, and runtime protection measures for these evolving software architectures.