1. Keep WordPress and all of your themes and plugins up-to-date to ensure that any security vulnerabilities are patched.
  2. Use a strong and unique username and password for your WordPress administrator account.
  3. Limit login attempts to prevent brute-force attacks.
  4. Use two-factor authentication for added security.
  5. Use a security plugin such as Wordfence or Sucuri to harden your website’s security.
  6. Use HTTPS to encrypt data transmitted between your website and visitors’ browsers.
  7. Regularly backup your website’s files and database to ensure that you can restore your website in case of an attack.
  8. Use a web application firewall (WAF) to block malicious traffic.
  9. Limit access to the wp-admin area by IP address.
  10. Remove unnecessary themes and plugins that are not in use.
  11. Use security keys in your wp-config.php file for added security.
  12. Regularly scan your website for malware and vulnerabilities.
  13. Disable file editing in the WordPress dashboard.
  14. Use a Content Delivery Network (CDN) to serve static files and protect against DDoS attacks.
  15. Use a security plugin that can block IP addresses from known malicious sources.
  16. Limit access to sensitive files such as wp-config.php and .htaccess.
  17. Use a plugin that can detect and block spam comments.
  18. Use a plugin that can detect and prevent SQL injection attacks.
  19. Use a plugin that can detect and prevent cross-site scripting (XSS) attacks.
  20. Regularly test and audit your website’s security to ensure that it is up-to-date and secure.

It is important to note that, website security is a continuous process, and it’s always a good idea to review your website’s security regularly and update it accordingly.