By keeping your WordPress plugins updated you can secure your site. This is one of the easiest method we can implement in our WordPress site. Most of the plugins you’ll be using might be free or premium. Free plugins are the plugins whose code is obtainable by anyone and if you are having the latest or updated version of plugin means you are not tend to attacks depend on vulnerabilities.
Anyone can update its plugin from WordPress official website, and check for the latest upgrades. If you are going to buy premium plugins from third party websites make sure to check the plugin first and upgrade it manually after making the backup of all your files.