Choose username wisely
Pick Strong Passwords
Secure Your Admin Area
“Enable Two-Factor Authentication”
“Set Login Limit”
“Keep WordPress Core, Theme and Plugins Up-To-Date”
One thing that a WordPress programmer would suggest to keep your site’s security protected is to always update your WordPress core, themes and plugins to the latest version. You will know when there will be new update for the themes and plugins installed on your site because WordPress will confront you with the “Update Available” banner whenever you login to your dashboard. You just have to click it to install the update. If you are worried that it might mess up with your site, you can always save a backup before installing the updates. If you need WordPress customization to strengthen the security of your site, then do so.