Developer JoomlaServiceProvider Tags Security Version 2.1.10
jSecure Authentication extension forbids login access to administration back-end without proper access key.
Joomla has one security problem, any web user can easily know if the site is created in Joomla by typing the URL to access the administration area (i.e. www.sitename.com/administrator). This allows hackers to hack the site easily once they crack the id and password for Joomla.