Explore proper authentication and data security methodologies for Node.js applications in this 41-minute conference talk from JSConf.Asia 2015. Dive into building secure systems using OAuth 2 and OpenID Connect, implementing Node middleware services for authentication, and working with appropriate hashing and salting algorithms for protecting user data. Learn about common security pitfalls and their solutions, enabling you to make informed decisions when creating a robust infrastructure to safeguard users and data. Gain insights from Tim Messerschmidt, an experienced mobile and web developer serving as Braintree's Head of Developer Relations, as he shares his expertise on this critical aspect of Node.js development.