Guides
Learn about randomness, entropy, and secure generation practices.
Password Entropy
Understand what entropy means for passwords, why length beats complexity, and why you should never reuse passwords.
Browser Randomness
How browsers generate random values, the Web Crypto API, and why Math.random is not suitable for secrets.
Random Ports
Port ranges, well-known ports, registered ports, dynamic ports, and why you should avoid conflicts.
UUID v4
What UUID v4 is, where it is used, and why a UUID is not a secret.
Environment Secrets
What .env files are, why you should never commit secrets, and why rotation matters.