Жизненный цикл API-токенов: От генерации до компрометации
JWT не защищает от кражи. Подпись гарантирует, что токен не подделан, но не мешает злоумышленнику использовать его, если тот оказался в чужих руках. В…
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How Enterprise React Apps Handle JWT Token Refresh Automatically
Access Token & Refresh Token Authentication in React (Axios + React Query) Authentication is one of the most critical parts of modern web applicat…
How Do You Log Someone Out of a Stateless System? JWT Invalidation on Logout
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 truth…
Zero Human Auth for AI Agents: How to Replace OAuth with Cryptographic Passport
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 complete …
JWT Explained: What It Is, How It Works, and Why You Should Care
If you've ever built a login system and wondered "should I use sessions or tokens?" - this one's for you. So..What Even Is a JWT? JWT stands for JSON …
ID, token, UUID и slug: в чём разница и почему их нельзя мешать
В каждом бэкенде рано или поздно рядом появляются id , UUID , slug , token и request_id . Все они выглядят как строки, но отвечают за разные вещи. Ког…
Top 10 Free Online Tools Every Developer Should Bookmark
Top 10 Free Online Tools Every Developer Should Bookmark Disclosure: I built these tools after repeatedly running into the same development tasks over…
Building AutoStack.Identity: A Zero-Dependency .NET 10 Library for SAML 2.0, JWT, and XML Signing
The Problem That Started This We were building a healthcare connectivity platform — multi-tenant, Azure-hosted, integrating with enterprise IdPs via S…
Пишем движок для блога на Rust
Недавно я решил завести собственный блог. Сначала посмотрел в сторону SSG, но они показались мне не слишком удобными для того сценария, который я хоте…
Your JWT decoder might be leaking your tokens. Here's how to check.
Most developers paste production JWTs into online decoders without thinking. Here's a 10-second DevTools check to see if your token is actually leavin…
JWT Token Refresh Patterns in React 19: Avoiding the Silent Auth Death Spiral
JWT Token Refresh Patterns in React 19: Avoiding the Silent Auth Death Spiral I've watched authentication break in production more times than I want t…
JWT in Node.js: How It Works, 5 Errors That Compromise Your API, and Refresh Token with Rotation
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 c…
Stop Storing JWTs in localStorage: A Security Guide for Web Developers
When I first learned about JSON Web Tokens (JWTs), I thought I had authentication figured out. The tutorial showed me this simple line: localStorage .…
Authentication vs. Authorization: A Deep Dive Every Backend Engineer Must Know
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 b…
Логин через Telegram по-новому: разбираем OIDC-флоу oauth.telegram.org и собираем его на Python
Telegram теперь полноценный OpenID-провайдер: oauth.telegram.org, JWKS, JWT, claims. Туториалы на GitHub при этом массово показывают старый виджет с H…
Fast API, JWT auth module
Authentication and authorization are key features in almost all web applications. How to do it with Fast API? Actually, there is a complete section of…
Token Revocation Without Killing Performance
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 decisio…
Inside the Auth Service: From Token Validator to Policy Decision Point
Most auth services start simple — verify the token, return 200 or 401. Then requirements accumulate. Tenant isolation. Service accounts. Token revocat…
JWT verification in production: an 8-check field guide
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 t…
We rotated our JWKS without overlap. Here is the 4-minute window that broke prod.
The on-call alert at 02:14 said auth_5xx_rate spiked from 0.01 to 31.4 . Not a deploy window. Not a traffic spike. Just thirty-one percent of authenti…
Three JWT bugs that ship to prod silently — and the 5-line CI test that catches them
Your auth tests pass. Your token verification works. Then your identity provider rotates a key at 02:47, your service hasn't refreshed its JWKS cache …