OAuth is Broken Without This | Meet PKCE

If you're building a mobile app, single-page app (SPA), or browser-based tool that uses OAuth — PKCE is essential.

PKCE (Proof Key for Code Exchange) is a powerful security upgrade to the OAuth 2.0 Authorization Code Flow. It protects users from authorization code interception attacks — especially when your app can't safely store a client secret.

In this video, we break down:
- Why traditional OAuth isn't safe for public clients
- What PKCE is and how it solves the code interception problem
- The step-by-step PKCE flow using real-world examples
- Code samples and architecture walkthroughs
- How tools like VS Code, Spotify, and Auth0 use PKCE today

You’ll leave with a crystal-clear understanding of how PKCE works, where to use it, and why it’s now the default for secure OAuth flows in SPAs and mobile apps.

🔐 Watch this before building your next login system!

⏱️ Timestamps
0:00 – Intro: Why OAuth Needs PKCE for Public Clients
0:42 – Quick OAuth 2.0 Recap & What’s Broken
1:28 – What is PKCE? (Proof Key for Code Exchange)
4:29 – The Problem PKCE Solves (Code Interception)
4:52 – How the PKCE Flow Works (Step-by-Step)
5:52 – JavaScript Code Example of PKCE in Action
6:56 – Real-World Use Cases: Mobile, SPA, CLI
7:40 – Gmail Case Study: When PKCE is Optional
8:40 – The Future: OAuth 2.1, CAEP & Beyond

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AWS Certification:
AWS Certified Cloud Practioner: https://youtu.be/wF1pldkQrOY
AWS Certified Solution Architect Associate: https://youtu.be/GzomXNLFgkk
AWS Certified Solution Architect Professional: https://youtu.be/KFZrBxSA9tI

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Видео OAuth is Broken Without This | Meet PKCE канала ByteMonk