Auth Patterns Deep Dive

Name: Auth Patterns Deep Dive
Price: 69 USD
Availability: InStock

Authentication is the most common source of security bugs in SaaS products. Not because auth is hard — but because most tutorials teach the basics and skip the edge cases. This course covers how auth actually works under the hood, the session vs JWT tradeoff, OAuth flows in depth, magic links, multi-tenancy auth, row-level permissions, and the 12 auth mistakes that get products breached.

Prerequisites: Some programming experience

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$69one-time · lifetime access

What you'll learn

✓Identity, authentication, and authorisation — the three primitives every auth system is built from

✓Sessions done right — httpOnly, Secure, SameSite, session fixation, expiry, and invalidation

✓JWTs: the full picture — structure, RS256 vs HS256, the algorithm confusion vulnerability, and when not to use JWTs

✓OAuth flows in depth — Authorization Code + PKCE, state parameter, and building "Sign in with GitHub"

✓Magic links and passwordless auth — secure token generation, hashing, single-use enforcement, and Resend integration

✓Multi-tenant auth — organisations, invitations, RBAC roles, and the org_id on every query pattern

✓Protecting routes and API endpoints — IDOR prevention, middleware-based protection in Next.js

✓The auth security checklist — the 12 mistakes that get products breached, and exactly how to fix each one

Course outline

Free — no account needed

How Auth Works

Identity, authentication, authorisation — the three primitives every auth system is built from

9 minFree

Sessions Done Right

HttpOnly, Secure, SameSite, session fixation, expiry, refresh token rotation, and the correct middleware.ts

11 minFree

Full course — $69 one-time

JWT: The Full Picture

Structure, claims, signing algorithms, expiry, verification failures, and the attacks libraries miss

12 min

OAuth Flows In Depth

Authorization Code + PKCE, state parameter, callback URL pitfalls, account linking, and error handling

13 min

Magic Links and Passwordless Auth

Token generation, hashing, single-use enforcement, expiry, and the failure cases most apps do not handle

11 min

Multi-Tenant Auth

Organisations, the invitation flow, tenant isolation on every query, and RLS with org context

13 min

Protecting Routes and API Endpoints

RBAC in middleware and route handlers, IDOR prevention, and why 404 beats 403 for security

11 min

The Auth Security Audit

Eight checks, eight insecure-vs-secure code pairs, one audit to run before you ship

14 min

Get the full course

8 lessons — from sessions and JWTs to OAuth, magic links, multi-tenant RBAC, and the security checklist.

✓ 8 lessons✓ Security-first patterns✓ Certificate

$69one-time