#Authorization

Articles about Authorization — exploring patterns, best practices, and real-world implementations in production systems.

3 posts tagged with authorization. ← All posts

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Pratik Dhanave · ·6 min read

The OAuth Flows

OAuth isn't one procedure — it's a family of flows for different kinds of clients, and picking the wrong one is a security bug, not a style choice. The good news is that modern guidance has collapsed the confusion: for almost every case today, the answer is the authorization code flow with PKCE, and knowing why the alternatives were deprecated is knowing OAuth security.

OAuth isn't one procedure — it's a family of flows for different clients, and picking the wrong one is a security bug. Modern guidance collapsed the confusion: for almost every case, the answer is the authorization code flow with PKCE.

#OAuth#Identity#Security#Authorization#Authentication
Pratik Dhanave · ·5 min read

OAuth 2.0: Delegated Authorization

OAuth solved a specific, once-terrible problem: how does an app access your data on another service without you handing over your password? Its answer — a scoped, revocable token granted through a trusted intermediary — is elegant, but only if you remember what OAuth actually is. It's authorization, not login, and everything about it makes sense once you hold that firmly.

OAuth solved a once-terrible problem: how does an app access your data on another service without your password? Its answer — a scoped, revocable token through a trusted intermediary — is elegant, but only if you remember it's authorization, not login.

#OAuth#Identity#Security#Authorization#Authentication
Pratik Dhanave · ·12 min read

Authorization: BOLA, BFLA, and Object-Level Access

Why the biggest class of API bugs is not about who you are but about what you are allowed to touch — and how to check ownership, function access, and property access on every single request.

The dominant class of API bugs: broken object level authorization (BOLA/IDOR — the #1 API risk), broken function level authorization, and object property level (mass assignment / excessive data exposure) — with allow-listed DTOs, ownership checks, and deny-by-default.

#API Security#Authorization#OWASP#Access Control#Security#APIs

All posts on this site are written by Pratik Dhanave, an Agentic AI Architect with 7+ years building production distributed systems, multi-agent AI platforms, and cloud-native infrastructure. About the author → Each article includes working code, architecture diagrams, and references to the specific frameworks and standards discussed. Browse all posts or explore related topics using the tag cloud above.