Security

Introduction One of the most common sources of confusion in identity and access management is the difference between authentication and authorization. While these terms are often used interchangeably, they represent distinct concepts that serve different purposes in security systems. Authentication: Who Are You? Authentication is the process of verifying someone’s identity. It answers the question: “Who are you?” Common Authentication Methods Something you know: Passwords, PINs, security questions Something you have: Hardware tokens, mobile devices, smart cards Something you are: Biometrics (fingerprints, face recognition, iris scans) Multi-factor authentication (MFA): Combining multiple methods for stronger security Authentication Flow Example ...

Introduction Not all identities are human. In modern distributed systems, we have two primary types of identities: user identities (humans) and workload identities (machines, services, applications). Understanding the differences is crucial for building secure systems. User Identities: The Human Element User identities represent real people who interact with systems through applications, dashboards, and APIs. Characteristics Interactive authentication (login flows) Long-lived sessions with refresh capabilities Subject to human behavior (password reuse, phishing) Require user experience considerations Need account recovery mechanisms User Identity Examples Employee accessing company resources Customer logging into a web application Administrator managing cloud infrastructure Developer using CLI tools User Authentication Methods Username and password Multi-factor authentication (MFA) Biometrics Passwordless (WebAuthn, magic links) Social login (Google, GitHub) Workload Identities: The Machine Element Workload identities represent non-human entities like services, applications, containers, and VMs that need to authenticate and access resources. ...

Introduction Modern identity systems rely heavily on tokens to represent identity and authorization. Understanding the different types of tokens, their purposes, and lifecycles is essential for building secure applications. What is a Token? A token is a piece of data that represents something. In identity systems, tokens typically represent: Who you are (identity) What you can access (authorization) For how long (lifetime) Tokens are usually implemented as: JWT (JSON Web Token): Self-contained, can be validated without server calls Opaque tokens: Random strings that require server lookup Structured tokens: Custom formats specific to certain systems The Three Main Token Types 1. Access Token Purpose: Grants access to protected resources (APIs, services) ...