Access Control

I’ve watched IAM evolve from simple LDAP directories to distributed identity meshes spanning cloud, on-prem, and edge. After implementing IAM for 50+ enterprises over 15 years, I’ve seen firsthand how the shift to remote work, cloud-native architectures, and zero-trust models has fundamentally changed identity security. What worked in 2015—VPN access with basic MFA—is a compliance failure in 2025. Visual Overview: sequenceDiagram participant User participant SP as Service Provider participant IdP as Identity Provider User->>SP: 1. Access Protected Resource SP->>User: 2. Redirect to IdP (SAML Request) User->>IdP: 3. SAML AuthnRequest IdP->>User: 4. Login Page User->>IdP: 5. Authenticate IdP->>User: 6. SAML Response (Assertion) User->>SP: 7. POST SAML Response SP->>SP: 8. Validate Assertion SP->>User: 9. Grant Access Why This Matters According to IBM’s 2024 Cost of a Data Breach Report, the average breach costs $4.88M, with identity-related breaches accounting for 61% of all incidents. Yet Gartner reports that 75% of organizations still lack comprehensive identity governance programs. I’ve investigated 100+ security incidents, and the pattern is clear: stolen credentials and lateral movement account for 80% of successful attacks. Modern IAM isn’t optional infrastructure—it’s your first and last line of defense. ...

Visual Overview: sequenceDiagram participant User participant App as Client App participant AuthServer as Authorization Server participant Resource as Resource Server User->>App: 1. Click Login App->>AuthServer: 2. Authorization Request AuthServer->>User: 3. Login Page User->>AuthServer: 4. Authenticate AuthServer->>App: 5. Authorization Code App->>AuthServer: 6. Exchange Code for Token AuthServer->>App: 7. Access Token + Refresh Token App->>Resource: 8. API Request with Token Resource->>App: 9. Protected Resource In the ever-evolving landscape of cybersecurity, Identity and Access Management (IAM) has emerged as a cornerstone of secure digital ecosystems. As organizations increasingly rely on cloud-based services, microservices architectures, and distributed systems, the role of an IAM architect has become critical. This blog post explores the five core skills that every IAM architect must master to design robust, scalable, and secure IAM systems. ...

Visual Overview: graph LR subgraph JWT Token A[Header] --> B[Payload] --> C[Signature] end A --> D["{ alg: RS256, typ: JWT }"] B --> E["{ sub, iss, exp, iat, ... }"] C --> F["HMACSHA256(base64(header) + base64(payload), secret)"] style A fill:#667eea,color:#fff style B fill:#764ba2,color:#fff style C fill:#f093fb,color:#fff JSON Web Tokens (JWT) are widely used for securing APIs and managing identity and access. While their primary role is to authenticate users, JWTs can also support fine-grained authorization — making it possible to control access down to the resource, action, or field level. This blog explores how to implement permission granularity using JWT in a secure and scalable way. ...

Visual Overview: graph TB subgraph "Authentication Methods" Auth[Authentication] --> Password[Password] Auth --> MFA[Multi-Factor] Auth --> Passwordless[Passwordless] MFA --> TOTP[TOTP] MFA --> SMS[SMS OTP] MFA --> Push[Push Notification] Passwordless --> FIDO2[FIDO2/WebAuthn] Passwordless --> Biometric[Biometrics] Passwordless --> Magic[Magic Link] end style Auth fill:#667eea,color:#fff style MFA fill:#764ba2,color:#fff style Passwordless fill:#4caf50,color:#fff In an age where cyber threats are increasingly sophisticated, relying on just a username and password is no longer sufficient to secure user accounts. Multi-Factor Authentication (MFA) has become an essential defense mechanism to ensure that the person trying to access a system is indeed who they claim to be. Let’s explore how MFA works, implementation options, and how to choose the right solution for your organization. 🔐 ...