16 hours ago
Storing Passwords - Why the Fast Hash Is the Bug
Storing passwords is the one piece of cryptography almost every backend engineer has to get right, and the mistake is always the same: reaching for a hash function that is good at being fast. For passwords, fast is the vulnerability. The whole discipline is a story about choosing a function that is deliberately, tunably slow, and this is the 2026 version of how to get it right.