Protect your website using Akeeba Admin Tools !
Aonther component you NEED in any J! installation is Akeeba Admin Tools by Nicholas K. Dionysopoulos.
Akeeba Admin Tools is a Swiss pocketkniife in regards to maintenance and protection of your Joomla site !
As most components and plugins, this comes in both a free and a pro edition.
I've used the pro version on all my sites for a couple years now, and it has always been of more value then the small amount you pay for the pro version! Also, their support is second to none !