Login & Authentication Snippets

The WordPress login screen sits at the same predictable path on every install, wp-login.php, with no rate limiting and no lockout built into core — which makes it the single most consistently attacked entry point on the entire platform. Brute-force bots don't need to find a vulnerability specific to your site; they just need your login form's URL and a list of common username/password combinations, then they run that list as fast as your server will accept requests. Because the attack works the same way against every WordPress site, the defenses that work are also largely the same regardless of what your site actually does.

This category covers the login flow specifically: slowing down or blocking repeated failed attempts, making the well-known login URL harder for generic bots to reach at all, and enforcing that new passwords actually meet a minimum strength bar instead of relying on users to notice a visual warning they can freely ignore. People end up here after noticing a spike in failed-login entries in their server logs, after a hosting provider flags unusual login traffic, or simply as a proactive step before a site goes fully live to the public.

A couple of these snippets change what a real visitor experiences when logging in (an extra URL parameter, a stricter password rule), so read the specific caveats on each one before adding it — a login-flow change is exactly the kind of thing you want to test yourself, in a private browser window, before assuming it works correctly for everyone.

New to editing WordPress code? Read our guide on how to safely add code snippets before using any of the ones below.