How to improve WordPress website security

WordPress security starts with the fundamentals that most agencies overlook. Keep WordPress core, themes, and plugins updated immediately when patches release—this isn't optional maintenance, it's your baseline defense. Set up automatic updates in wp-config.php so you're not relying on client action or remembering to do it yourself. Remove any unused themes and plugins from the installation, not just deactivate them. Every inactive plugin is dead code that still represents a potential vulnerability vector. Use a Web Application Firewall (WAF) like Sucuri or Cloudflare to filter malicious traffic before it hits the server. These catch known attack patterns and zero-days better than any server-level configuration alone.

Strengthen authentication by enforcing strong passwords and implementing two-factor authentication for all admin accounts. WordPress.com enforces this by default, but self-hosted sites need a plugin like Wordfence or Two Factor to make this mandatory. Change the default wp-admin URL to something non-obvious—this stops automated bots from hammering the login page. Disable file editing in the WordPress dashboard by adding `define('DISALLOW_FILE_EDIT', true);` to wp-config.php. If someone gains admin access, they can't immediately modify your theme or plugin files to inject malware.

On the server side, ensure your hosting environment is hardened. Most agencies should use managed WordPress hosting that handles server-level security, rather than shared hosting. If you're on a dedicated server, make sure your database user has limited permissions—they shouldn't have the ability to create new databases or alter user privileges. Use an SSL certificate on every site; Google ranks HTTPS sites higher and it encrypts login credentials. Set up regular backups stored off-site, because even perfect security won't prevent a ransomware attack. Backups let you recover without paying demands. Finally, monitor file changes and login attempts. Wordfence's free version logs suspicious activity, and paid security plugins track when files are added or modified outside of WordPress updates—this catches injected malware quickly. These steps create overlapping layers of protection that stop the vast majority of attacks targeting WordPress sites.