indextwo

Whenever WordPress performs a core update, it automatically pulls down the following files onto the root:
<ul>
<li><code>license.txt</code></li>
<li><code>readme.html</code></li>
<li><code>wp-config-sample.php</code></li>
</ul>
These files aren’t an inherent security risk by themselves; however they are uneccessary clutter on the root of your site (why would you want a <code>wp-config-sample.php</code> file on your production website?!); and it’s just another easy-to-read vector confirming that you have a WordPress site for script-kiddies to scrape and attack.
Simply install this plugin and it will clean up those files every time you perform a core WordPress update.

Core Files Update Cleanup

This plugin deletes the unnecessary license.txt, readme.html and wp-config-sample.php files after a core update.

Gary Pendergast

Advanced Automatic Updates adds extra options to WordPress’ built-in Automatic Updates feature. On top of security updates, it also supports installing major releases, plugins, themes, or even regular SVN checkouts!
If you’re working on a WordPress Multisite install, it will properly restrict the options page to your Network Admin.
While this will be useful for the vast majority of sites, please exercise caution, particularly if you have any custom themes or plugins running on your site.

Advanced Automatic Updates

Nice Plugin

Adds extra options to WordPress' built-in Automatic Updates feature.

Core Files Update Cleanup vs Advanced Automatic Updates