On WordPress 3.7+ you can help remove the stress of outdated WordPress sites that are susceptible to hacking. To do this just simply enable Automatic Background Updates.
Turning on Automatic Background Updates causes WordPress to update whenever a new major or minor release is available. In some cases, a major or minor release may not work correctly with an installed plugin, which could cause your site to render improperly, or fail completely resulting in a blank white page. It is very important that you have backups enabled, and that you monitor your site for problems closely. Webair can backup your server regularly or you can install a WordPress plugin to do your own backups.
Enable Automatic Background Updates via wp-config.php
Navigate to your root WordPress directory (in this case: /home/example/public_html) and edit the wp-config.php file:
Add the following to the file:
/* Enable Automatic Background Updates for WordPress Core */ define( ‘WP_AUTO_UPDATE_CORE’, true );
In this case, I added the above code just above:
/* That’s all, stop editing! Happy blogging. */
Then exit and save the file with the command :wq .