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Passkeys — это не будущее. Это уже работает в каждом банковском приложении на вашем телефоне. Альфа-Банк, Тинькофф, Сбер — давно. GitHub, Apple, Goo…
Всем привет! Меня зовут Петрович и я работаю техлидом java команды в небольшом международном финтехе. В прошлый раз я рассказывал, как мы меняли Red…
When building a modern web application, authentication is one of the first things we need to think about. A simple login system sounds easy: User en…
Basic auth was always the placeholder. It worked, but sending credentials on every single request never sat right — no real session, no expiry, no w…
A media service that accepts Google and GitHub sign-in has a harder constraint than token parsing: an account must remain recoverable without lettin…
While working on Node.js + Express projects, I noticed I was repeatedly generating JWT secrets for my .env files. Usually, I would either: → Search…
One of the easiest and most helpful features of Cursor is Cloud Agents. With often 1 click you can have an agent in an ephemeral environment that yo…
Here's the sentence most developers learn a little too late: a JWT's header and payload are not encrypted. They're Base64. Anyone who can see your t…
The mental model that fixes everything JWT is just a token format . It is not authentication, not a session, and not a database. Once you separate t…
JWT auth without the confusion JWTs are everywhere, but they're often misunderstood. Let's strip away the jargon and see what they actually are, how…
JWT Validation: Verifying Tokens for Authentication and Authorization A practical guide to JWT validation — the process of checking a JSON Web Token…
A refresh token leaked out of one of our Android TV clients last winter. Not through a server breach — through a rooted device running a sideloaded…
When I started learning Spring Boot , one term kept appearing everywhere: JWT Authentication Every tutorial showed me how to implement it, but very…
How I Built JWT Authentication in Spring Boot (Beginner-Friendly Guide) Authentication is one of the first things every backend developer learns whe…
JWT errors often look specific, but the message is only the starting point. The fastest way to debug them is to separate token shape , signature ver…
We've established that Base64 isn't encryption and that you can't un-hash a password . JWTs are where both of those facts collide — and where the mi…
Access Token & Refresh Token Authentication in React (Axios + React Query) Authentication is one of the most critical parts of modern web applic…
JWTs are one of those technologies that feel wonderful right up until you hit your first "log me out" requirement. Then you discover the awkward tru…
Your AI agent needs to log into a customer's dashboard at 3 a.m. You cannot ask a human to click Allow . The agent has no browser. It cannot complet…
Top 10 Free Online Tools Every Developer Should Bookmark Disclosure: I built these tools after repeatedly running into the same development tasks ov…
The Problem That Started This We were building a healthcare connectivity platform — multi-tenant, Azure-hosted, integrating with enterprise IdPs via…
Most developers paste production JWTs into online decoders without thinking. Here's a 10-second DevTools check to see if your token is actually leav…
A dev submitted a PR with CPF and password hash inside the JWT payload. He thought Base64 was encryption. The reviewer rejected it, opened an urgent…
When I first learned about JSON Web Tokens (JWTs), I thought I had authentication figured out. The tutorial showed me this simple line: localStorage…
This post is an in-depth breakdown of Authentication (Who are you?) and Authorization (What are you allowed to do?). In the early days, identity was…
Telegram теперь полноценный OpenID-провайдер: oauth.telegram.org, JWKS, JWT, claims. Туториалы на GitHub при этом массово показывают старый виджет с…
Authentication and authorization are key features in almost all web applications. How to do it with Fast API? Actually, there is a complete section…
JWTs have a hard problem hiding inside them: they're stateless. The whole point of a JWT is that the verifier can check a signature and make a decis…
Most auth services start simple — verify the token, return 200 or 401. Then requirements accumulate. Tenant isolation. Service accounts. Token revoc…
A correct JWT verifier does eight things. Most production verifiers I have read do four or five of them. The other three or four get skipped because…