Secure Your APIs: The Ultimate OAuth 2.0 & OpenID Connect Masterclass

What you will learn:

Master OAuth 2.0 flows (Authorization Code, Implicit, PKCE, Client Credentials, Device Code)
Secure access tokens using JWTs, opaque tokens, and advanced techniques (mTLS, DPoP)
Implement token validation (local and introspection)
Manage OAuth scopes for granular access control
Integrate OpenID Connect (OIDC) for user authentication
Handle various client types (public and confidential)
Secure machine-to-machine communication
Integrate with external identity providers and legacy systems (SAML)
Use advanced client authentication methods (JWT, SAML assertions, mTLS)
Mitigate security risks through attacker scenarios and decision trees

Description

Secure Your APIs: The Ultimate OAuth 2.0 & OpenID Connect Masterclass is your comprehensive guide to building robust and secure API architectures. This course goes beyond the basics, equipping you with the practical skills and in-depth knowledge needed to confidently design, implement, and manage secure authentication and authorization systems. Whether you're a seasoned developer or just starting your journey into API security, this course will elevate your expertise.

Dive deep into OAuth 2.0 flows, including the Authorization Code, Implicit, PKCE, Client Credentials, and Device Code flows. You'll learn how to choose the optimal flow for various scenarios, avoiding common pitfalls and security vulnerabilities. Master token management – understand access tokens, refresh tokens, JWTs (JSON Web Tokens), and opaque tokens; learn about token validation methods such as local validation and introspection; and explore advanced techniques for securing your access tokens, including mutual TLS (mTLS) and Demonstration of Proof of Possession (DPoP).

We'll cover OpenID Connect (OIDC) and its integration with OAuth 2.0 for seamless user authentication. You'll learn how to handle various client types (public vs. confidential), define granular OAuth scopes for precise access control, and implement advanced client authentication methods using JWTs and SAML assertions. This course also includes a comprehensive exploration of securing machine-to-machine communication, integrating with external identity providers, and handling legacy systems.

Through hands-on exercises using cURL simulations and engaging attacker scenarios, you'll develop the critical thinking skills to identify and mitigate security risks. Decision trees and practical examples will guide you through real-world challenges, enabling you to build secure API strategies for any project, from migrating legacy systems to designing modern zero-trust architectures.

Enroll now and transform your API security knowledge from novice to expert!

Curriculum

Course Introduction: Mastering OAuth 2.0 Fundamentals

This introductory section sets the stage for your OAuth 2.0 journey. You'll review the course agenda and structure ('Course Agenda and Structure', 'Recommendations for Maximizing Your Learning Experience'), and get acquainted with the course objectives and how to maximize your learning experience.

OAuth 2.0 Core Concepts

This section provides a solid foundation in OAuth 2.0. Learn why OAuth 2.0 is essential ('Why OAuth 2.0 is Essential'), explore real-world scenarios ('Understanding OAuth 2.0 Standard Flow'), grasp OAuth roles ('Understanding OAuth 2.0 Roles'), and see OAuth 2.0 in action with practical demos ('OAuth 2.0 Demo'). You’ll also master client types (public vs. confidential), defining and structuring effective OAuth scopes ('Understanding OAuth 2.0 Client Types', 'OAuth 2.0 Scopes'), understanding access and refresh tokens ('Understanding OAuth 2.0: Access Token vs. Refresh Token'), token formats (opaque vs. JWT) and validation methods (local vs. introspection) ('OAuth 2.0 Token Formats Explained', 'OAuth 2.0 Token Validation'). Finally, you’ll be introduced to OpenID Connect (OIDC) and see how it integrates with OAuth 2.0 ('Introduction to OpenID Connect').

User-Initiated OAuth 2.0 Flows: A Deep Dive

Understand the most common OAuth 2.0 user-initiated flows: Implicit, Authorization Code, and PKCE ('Understanding the OAuth 2.0 Implicit Flow', 'Understanding the OAuth 2.0 Authorization Code Flow', 'Understanding the OAuth 2.0 PKCE Flow'). For each flow, you'll learn step-by-step implementation, explore potential security challenges ('OAuth 2.0 Implicit Flow: Hacker Scenario', 'OAuth 2.0 Authorization Code Flow: Hacker Scenarios'), and discover how to mitigate risks. The section concludes with a recap and a decision tree to help you choose the right flow for your needs.

Advanced Security for User-Initiated Flows

This section explores advanced security extensions for OAuth 2.0 flows. You'll investigate threats to authorization requests ('OAuth 2.0 User-Initiated Flows: Hacker Scenario'), understand techniques like JWT Secured Authorization Request (JAR) and its limitations, and learn about enhancing security with JWE (JSON Web Encryption) and Pushed Authorization Requests (PAR) ('Understanding the JWT Secured Authorization Request', 'Asymmetric Encryption Explained', 'Enhancing OAuth 2.0 Security with JWE', 'OAuth 2.0 Pushed Authorization Requests'). The section culminates in a comprehensive recap and use-case decision tree.

Specialized OAuth 2.0 Flows

This section delves into specialized OAuth 2.0 flows: Resource Owner Password Credentials (ROPC) ('Exploring the OAuth 2.0 ROPC Flow'), the Client Credentials flow for machine-to-machine communication ('Mastering the OAuth 2.0 Client Credentials Flow'), and the Device Code flow for devices with limited input ('Understanding the OAuth 2.0 Device Code Flow'). You'll learn when to use each flow and its potential security implications.

Integrating with External Systems & Legacy Infrastructures

Learn how to integrate with external identity providers using JWT and SAML assertions ('Exploring the OAuth 2.0 JWT Bearer Assertion Flow', 'Understanding the OAuth 2.0 SAML Bearer Assertion Flow'). This section will show you how to connect with partners, JWT providers, and external systems, as well as how to integrate with legacy infrastructures and SAML for phased migrations.

Advanced Client Authentication Techniques

This section covers advanced client authentication methods. You'll explore various techniques, including client secrets, JWT bearer assertions, SAML bearer assertions, and mTLS with X.509 certificates ('Client Authentication in OAuth 2.0 Using Client Secret', 'Client Authentication in OAuth 2.0 Using JWT Bearer Assertion', 'OAuth 2.0 Client Authentication with mTLS'). You will learn to choose the appropriate method based on your specific needs and security requirements.

Advanced Token Security and FAPI Compliance

This section dives into advanced methods of securing your OAuth 2.0 access tokens. You'll master FAPI-compliant mechanisms such as mutual TLS (mTLS) and Demonstration of Proof-of-Possession (DPoP) to further enhance your API security ('OAuth 2.0 Access Token Binding with X.509 mTLS', 'OAuth 2.0 Access Token Binding with DPoP').