5 Critical WordPress Security Mistakes You Must Fix Today

WordPress powers over 43% of the web, which makes it the single biggest target for automated attacks. Most successful breaches don’t use sophisticated zero-days — they exploit basic configuration mistakes that take minutes to fix.

1. Running outdated plugins and themes

Outdated software is responsible for the majority of WordPress hacks. Every unpatched plugin is a potential entry point. Enable automatic updates for minor releases in your wp-config.php and audit your active plugins monthly — deactivate anything you don’t actively use.

2. Using weak admin credentials

Never use «admin» as your username. Use a strong, unique password generated by a password manager, and enable two-factor authentication on your wp-admin immediately. WP 2FA (free) makes this straightforward.

3. No Web Application Firewall

A WAF inspects incoming traffic and blocks malicious requests before they reach WordPress. Wordfence offers a solid free-tier firewall that covers the most common attack patterns including brute force, SQL injection, and XSS.

4. Skipping automated backups

Backups are your recovery plan when everything else fails. UpdraftPlus (free) can automatically back up your entire site daily to Google Drive or Dropbox with zero configuration.

5. Leaving XML-RPC exposed

Unless you specifically need XML-RPC for mobile apps or Jetpack, disable it. It’s a common vector for brute-force amplification attacks. Add this to your .htaccess: <Files xmlrpc.php> deny from all </Files>

Implementing all five of these fixes takes under an hour and dramatically reduces your attack surface. Need help with a full WordPress security audit? Get in touch.