wp-login.php explained: what it is and how to protect your WordPress login

What is wp-login.php

wp-login.php is the built-in WordPress page used to sign in to a WordPress site. It handles the submission of login credentials and the creation of the user session.

How it works

When a user enters a username and password on that page, WordPress validates the credentials, creates an authentication cookie, and redirects the user to the admin area or the page they came from.

Common threats to wp-login.php

• Brute force attempts that try many passwords
• Phishing pages that imitate the login form
• Exposure of the login page to automated scanners
• Credential stuffing using stolen passwords
• Vulnerable plugins or themes that alter login behavior

Protecting your login page

• Use strong, unique passwords and avoid common usernames
• Enable two factor authentication for admin accounts
• Limit login attempts with a plugin or server-side rule
• Change the login URL using a trusted plugin to hide the default path
• Enforce HTTPS to encrypt credentials in transit
• Disable xmlrpc if you do not need it
• Keep WordPress core, themes, and plugins up to date
• Monitor login activity and set up alerts

Best practices for secure WordPress logins

• Use a reputable security plugin that monitors login activity
• Require two factor authentication for all admin accounts
• Regularly back up your site and test restores
• Limit access by IP for critical paths if feasible
• Consider password managers to ensure strong credentials