OAuth 2.0 and OpenID Connect (OIDC) are powerful, flexible, and… surprisingly easy to misconfigure.Note: This article belongs to Part 5.2: App Security Best Practices in our Application Security series. From overly permissive tokens to incorrect redirect URIs and unchecked ID tokens — even mature teams fall into subtle traps. In this final post of […]
Monthly Archives: January 2025
13 posts
Why the Implicit Flow is deprecated and how PKCE (Proof Key for Code Exchange) secures modern Single Page Applications (SPAs) and mobile apps using OAuth 2.0.
Dive into the structure of JSON Web Tokens (JWT), how they're signed and validated, where expiry pitfalls creep in, and best practices for secure token usage in real-world applications.
By now, you know the difference between authentication and authorization. You’ve explored OAuth 2.0, OpenID Connect, and even federated SSO setups across identity providers. So, what’s next? Have you ever heard or Refresh Tokens?Note: This article belongs to Part 4.1: Token Lifecycle & Retry Logic in our Application Security series. Here’s the […]
Federated Identity enables Single Sign-On across different systems, domains, and organizations. Learn how it works, what protocols are involved, and how trust is brokered between Identity Providers and applications.
Active Directory and Azure AD both manage identities in Microsoft environments—but they serve very different purposes. This blog breaks down how they work, where they differ, and when to use each in modern application architecture.
LDAP is still widely used for centralized authentication and user directories in enterprise systems. This post breaks down how it works, how it compares to modern identity solutions, and how to integrate it as a developer.
SAML powers enterprise SSO for millions of users every day. Learn what it is, how it works, and how to implement it with Spring Security in modern applications.
OpenID Connect adds identity on top of OAuth 2.0. Learn how it works, when to use it, and how to implement secure login flows using Spring Security.
OAuth 2.0 is the backbone of modern authorization. Learn how it works, which flows to use, and how to implement OAuth securely using Spring Security.
Explore the core differences between session-based and token-based authentication. Understand the technical design, implementation trade-offs, and how Spring Security supports both approaches.
Authentication identifies who a user is. Authorization defines what they’re allowed to do. Learn the technical distinctions with Spring Security examples to apply these concepts in your applications.
Kick off your journey into Application Security with this visual overview of modern authentication, authorization, and identity protocols. From OAuth to LDAP, this series maps out everything you need to build secure, user-aware applications.