Here's a good demonstration of how Akeeba Admin Tools Pro's Web Application Firewall protects our Joomla CMS websites.
A couple of weeks ago we launched a new Joomla site, that replaced an old Wordpress site. It's not a large site, but all of those 404shield security exceptions are bots searching our new website for a Wordpress login page. This is literally 98% of the bad traffic blocked in the last 2 weeks!