How Rate Limiting in PHP and Laravel Defends Against Brute Force Login Attacks

Brute force, dictionary, and credential stuffing attacks all rely on making unlimited login requests, making rate limiting a critical defense for PHP applications. Unlike some security measures, rate limiting does not require patching a vulnerability — it simply restricts how many login attempts a server will accept within a given time window. PHP has no native rate limiting, so developers must implement it using session storage, a database, or Redis, with Redis considered the production standard for performance and reliability. Laravel provides built-in rate limiting tools that can be applied to login routes to block excessive attempts automatically. This article is the thirteenth in a series on PHP and Laravel application security, emphasizing understanding each attack method before applying countermeasures.