Secure Joomla From Hackers

Recently we wrote an article on "Wordpress Mass Defacement Tool "and On "Securing Your Wordpress from being Hacked', However I was requested by one of our readers to write an article on securing joomla blog from hackers and preventing it from being hacked, Joomla just like wordpress is a very widely used CMS platform, Joomla itself is quite secure by default, However the extensions are developed