Stop Storing Tokens in Local Storage! (OAuth 2.1 Guide)
re you still using deprecated OAuth 2.0 patterns? In this deep dive, we explore why OAuth 2.1 is becoming the new standard for secure application authorization and why your current token storage strategy might be a major security risk.
In this video, we cover:
The Death of Local Storage: Why storing JWTs in Local Storage makes you vulnerable to XSS attacks and what to use instead.
PKCE for Everyone: How Proof Key for Code Exchange (PKCE) is no longer just for mobile apps, but a requirement for all OAuth 2.1 clients.
State Integrity & Security: Protecting your redirect URIs and preventing authorization code injection.
OAuth 2.0 vs 2.1: A side-by-side comparison of what’s been removed (like the Implicit Grant) and what’s been hardened.
Whether you're a backend engineer or a frontend developer using React, Vue, or Next.js, understanding these security upgrades is critical for building production-ready apps.
#OAuth2 #WebSecurity #SoftwareEngineering #LastMileDeveloper #InfoSec #WebDev
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00:00:00 The Booking.com Exploit: How a Single Wildcard Hijacked Accounts
00:01:23 OAuth vs. OIDC: Delegated Authorization vs. Identity Verification
00:02:54 RFC 9700: Why the Industry is Abandoning Operational Flexibility
00:03:39 URI Routing Vulnerabilities: Open Redirects and Pattern Matching
00:05:59 The Myth of Secure Regex: Implementing Bit-for-Bit Matching
00:06:44 PKCE (RFC 7636) Handshake: Neutralizing Token Interception
00:08:56 State Integrity: Preventing Login CSRF with Nonces
00:10:18 Browser Storage Paradigms: Local Storage vs. Volatile Memory
00:12:32 SPA Challenges: Dealing with Third-Party Cookie Deprecation
00:14:22 Mobile Security: Migrating from Custom Schemes to Verified Deep Links
00:15:44 Provider Ecosystems: Google, Microsoft, and GitHub Variations
00:17:58 Debugging Protocols and the JWT Revocation Bottleneck
00:19:35 3 Concrete Action Items for Production Infrastructure