Security is now a primary concern for organizations and their customers due to the increasing number of data breaches and vulnerabilities. The Secure by Design approach helps teams reduce both the costs of fixing vulnerabilities and the risk of introducing them to customers. This strategy involves considering potential security risks much earlier in the development cycle. Challenges with building secure software include siloed workstreams and rapidly evolving applications, which can hinder communication and knowledge sharing among security, product, and platform teams. To address these challenges, organizations should adopt a decentralized model for workstreams, create a scalable system for sharing knowledge, and design customer-centric software.