Credential Stuffing Doesnt Break Your Login. It Drowns It. Heres a Pre-Auth Filter.
Credential stuffing is the most boring attack in the world, which is exactly why it works. There's no exploit, no injection, no clever bypass. Someone bought a list of a few million email/password pairs from an unrelated breach, and now a botnet is quietly replaying them against your login form at a few requests per second per IP, spread across ten thousand IPs. Every single request is a valid, well-formed login attempt. That's the whole problem. I want to talk about why the usual defenses miss
