Conhecimento de base e explicações práticas sobre os temas que nossas ferramentas abordam — de criptografia a regras de viagem e vistos, padrões web e segurança.
A short guide to hash algorithms: what makes MD5 insecure, what SHA-256 does better, and when to use which algorithm.
Leia mais →BMI is simple but has blind spots. We compare it with methods for measuring body fat percentage — and explain when each metric is useful.
Leia mais →How the rolling 180-day window actually works, common myths, and a few examples for visa-free travelers.
Leia mais →Header.Payload.Signature, signing algorithms, common claims, and security pitfalls — a practical intro to JWT.
Leia mais →The 5-field syntax, special characters, common patterns, and typical pitfalls — from the classic @daily to the Quartz variant.
Leia mais →Entropy, brute force, Diceware passphrases, password managers, and 2FA — everything that belongs to a modern password strategy.
Leia mais →