Wanted to thank http://www.wpbeginner.com/wp-tutorials/the-right-way-to-remove-wordpress-version-number/ for this article on June 21, 2012. And, http://www.kodelibrary.com/development-platform/wordpress/remove-wordpress-generator-meta-tag-as-security-precaution/ written May 7, 2013
Obscuring your WordPress version foils hacking bots
Programs around the globe will scan the internet for something like this:
WordPress 3.8" /> and in your RSS feed
They find this in the rendered source code of both your website and your RSS feeds. To check yourself, load up you WordPress site and right-click your mouse and select VIEW SOURCE.Â Do that for both your site and your RSS feed link. You can find that RSS feed link in the meta widget box that you login to WordPress admin.
WordPress Security through Obfuscation
Add this to the end of your theme functions.php file.